What are two important aspects of a graph that shows a proportional relationship?
What is the graph is a straight line and goes through the origin.
100
If Mrs. Pearson is filling her swimming pool and and a graph shows a relationship between x, the number of minutes she fills the pool and y, the number of gallons of water in the pool. Draw a graph that shows the pool has 50 gallons in it after five minutes and 70 gallons after 7 minutes.
What is a graph that starts at the origin and goes through the points 5,50 and 7,70.
100
John is opening a new restaurant and wants to predict the busiest days and times so he can hire and schedule workers. He went door-to-door to survey 50 residents in the same town as the restaurant. Which statement best explains why this is NOT a representative sample of his future customers?
A) The sample is too small
B) The sample only included people who live close to the restaurant
C) The sample is too large
D) The sample of people surveyed may not eat in restaurants
What is D
100
A math teacher loans calculators to students to take home and return to school the next day. He recorded the number of students who borrowed calculators. What is the probability that a student who borrowed a calculator is in his 3rd period?
1st period - 30
2nd period - 25
3rd period - 10
4th period - 5
What is 1 in 7
100
An elephant drank 3 1/2 gallons of water in 1/4 of an hour. What was the average rate in gallons per hour at which the elephant drank.
What is 14 gal/hr
200
Three items are on sale at a local store. A shirt was originally $10.00 and is now $8.00. A pair of jeans was $29.00 and is now $23.20. A pair of boots were $52.00 and are now $41.60. Do these regular and sale prices represent a proportional relationship? Why or why not?
What is yes they are a proportional relationship because they all have a 20% discount.
200
A large egg carton holds 24 eggs. Draw a graph of the proportional relationship between the number of eggs and the number of cartons.
What is a graph that goes through the origin and has points at 1, 24 2, 48 3, 72 4, 96
200
Tom is opening a pool business. He wants to determine the number of people in town that own a pool. Which is the best group of people for Tom to survey?
A) 150 people who are members of the swim team
B) 150 people randomly selected from the town telephone book
C) 150 people who completed and returned a survey by mail
D) 150 people randomly selected from customers at a local pool supply store.
What is B
200
A movie critic rates movies on a scale of four stars. For 20 movies her rates are as follows: 4 stars, 2 movies, 3 stars 9 movies, 2 stars, 7 movies, 1 star, 2 movies. If she rates 100 movies what is the best prediction for the number of movies she gives 3 stars?
What is 45.
200
The Smith family takes a road trip every year. This year they decided to record their total distance traveled after each hour. Draw a graph that that shows the Smith family traveling at 50 mph. How far will they have gone after 5 hours?
What is a graph with points at 1,50 2, 100 3,150 4,200 5, 250 and after 5 hours they have gone 250 miles.
300
5 machines can produce cell phones at the following rate: Hours 3, phones 51, Hours 6, phones 102, Hours 9, phones 153, Hours 12, phones 204. What is the unit rate for phones produced per hour?
What is 17 phones per hour
300
Magnolia Burgers sells 125 burgers a day. If sales increase by 80%, how many burgers did the restaurant sell on that day.
What is 225
300
A snack food company wants to find out the opinions of middle school students about their product. Which method produces the most representative sample for the survey?
A) Set up a booth at a local store where the snacks are sold and interview the students that come in
B) Obtain a list of all students from the schools and randomly choose 200 students
C) Mail surveys to the homes within ten blocks of the schools in the community.
D) Send text messages to all cell phone numbers in the community that end in 5.
What is B
300
Cheryl has 3 quarters, 4 dimes, and 3 nickels in her pocket. She pulls one coin at a time from her pocket without putting any back in. What is the probability that the first coin she pulls is a quarter and the second coin she pulls is a dime.
What is 2/15
300
Joe is going to make a berry pie. He buys x pounds of berries and a pie crust that cost $5.50. The total cost in dollars, y, can be found using the equation below.
y = 2.25x + 5.50
What is $2.25
400
One species of octopus has 8 legs and 2 eyes. What is the constant of proportionality for the ratio of the number of legs for this octopus to the number of eyes?
What is 8/2 or 4/1
400
Joan bought a sweater that had an original price of $32.00, she had a 25% off coupon. How much did she pay for the sweater?
What is $24.00
400
See Question Labeled Sampling Inferences 400
What is 2
400
After reviewing this quarter's financial reports, Mrs. Lewis tells her employees that it is very likely that they will be able to provide benefits this year. Write a value that represents the probability the employees will receive benefits.
What is a number close to 1 ie. .96
400
See question labeled ETC. 400
What is 3 out of 4
500
Each sandwich Jack makes requires: - 3 slices of bread - 1/4 pound of turkey and 1 3/4 slices of cheese. He makes 16 sandwiches. How much of each ingredient will he need.
What is 48 slices of bread
4 pounds of turkey
28 slices of cheese
500
Starbucks buys coffee at a wholesale price of $14 per pound. When they sell it the price is marked up by 40%. What is the selling price?
What is $19.60
500
See question Labeled Sampling Inferences 500
What is The range in the spring was 3 more than the range in the fall.
500
Mr. Miller gathered students in the MPR for an assembly. The list below represents the number of students at the assembly and the color of their eyes. There was a blue card taped to the bottom of one of the chairs. What is the probability that the student with blue eyes is sitting on the chair with the index card?
- 35 have blue eyes
- 80 have green eyes
- 145 have brown eyes