Percentage and Proportions
Kara bought 2 birthday gifts for her twin nephews. Each gift costs $12.50. Sales tax was 6.75%. What was the total cost for the gifts, including tax?
$26.69
1. The ratio between two quantities is not constant.
2. Graph does not pass through the origin.
3. Graph has 'beginning' commonly know as the y-intercept
Non-proportional relationship
5x - 18 = 22
x = 8
The diameter of the track field is 16 ft. Esther is trying to find the area of the field what number should she use for radius of the field?
r = 8 ft
Will it rain today!?
the probability of raining today is between 0 and 1
The scale model of a building is 3.5 feet tall. If the scale used to make the model is 1 foot = 130 meters, how tall is the original building?
455 meters
A car travels at 55 mph. How many miles will it travel in 5 hours?
275 miles
-(8x-12) = 20
x =-1
Is area in terms of pi exact or approximate?
Exact!
What is the probability of flipping three heads in a row?
1/8
Which Math unit was your most favorite this year?
Of course all of them!
The equation k = y / x
Proportional relationship
9 = 1/2 x + 3
x = 12
Mr. Dean wants to paint the top of the round picnic table, green. The diameter of the table is 6 feet. The paint comes in a can that covers 18 square feet of surface. How many cans of paint does Mr. Dean need to purchase to paint one coat on the top of the table?
2 cans
Twelve of the 30 chocolates in a box of Mandy's chocolate are milk chocolates. Using the data, how many of the chocolates in a 200- piece box can you predict will be milk chocolate?
80 milk chocolates
The Clarks went to dinner at Chuy's. Their bill came to $45. The tax was 7.5% and they left a tip of 18% of the bill before tax. How much did the Clarks spend on dinner?
$56.48
Flavio has $300 in the bank. Each time he rides the bus, he spends $2. If Flavio rides the bus x times, which equation could represent the money he will have in his bank in terms of x?
300 - 2x
Which value makes the inequality 3x + 5 <= 14 not true?
A. 1
B. 2
C. 3
D. 4
4
A square pyramid has triangular faces, each with a base of 8 inches and height of 14 inches. The total surface area of the square pyramid is 288 sq. in. What is the area of the base of the square pyramid?
64 sq. inches
What is the probability of tossing a coin that lands on heads and choosing a consonant from the word ALGEBRA?
2/7
Olivia scored 80 points on the first math test of the year. On the second math test, she scored 76 points. What is the percent change in the number of points she scored between the first and the second tests?
5% decrease
A fish is swimming at a constant rate towards the ocean floor. The equation y =-7x-3 can be used to represent this situation. Where y represents the depth of the fish below sea level. What does -7x and -3 represent?
7 represents the fish descending per second and 3 represents the starting position at 3 meters below sea level
3.3 - 3.3x >= 6.6
x <= -1
A triangular pyramid has a height of 18 yards and a base of 330 square yards. What is the volume of the pyramid?
V = 1,980 cubic yards
There are 9 blueberry, 6 apple and 15 strawberry breakfast bars. What is the probability that a blueberry bar is selected and replaced and then a strawberry breakfast bar is selected?
3/20