Joel borrowed money from his parents for a down payment on a car. If he borrowed $5000 at a 2.5% rate for 3 years, how much total will he owe his parents?
I=5000(.025)(3)
$375+$5000
$5,375.00
100
This year there were 90 kids enrolled in swim lessons. Last year there were 120 kids in swim lessons. What was the percent of change?
25%
100
Mary and Ann are painting a fence. Mary paints 20 feet of fence in 30 minutes. Ann completes 25 feet in 35 minutes. Are their rates proportional? Explain
No, their unit rates are not the same
200
418 is 55% of what number?
760
200
How long will it take for $500 to earn $45 in interest at a simple interest rate of 3%?
45=500(.03)T
3 years
200
What is the percent markup for an item that was bought wholesale for $40 but sold retail for $65?
62.5%
200
At the grocery store, a package of 6 Snickers bars cost $2.64 and a package of 10 Snickers bars cost $4.40. Are these proportional? Explain?
Yes, both unit rates are $.44/1 bar
300
Matthew earns 6.5% commission on every car he sells. If he sold $82,500 in car sales in March, how much did he earn in commission that month?
$5,362.50
300
How much interest will Staci owe if she borrows $1200 at 3.5% for 3 ½ years?
I=1200(.035)(3.5)
$147
300
In 2012, 54 students graduated with high honors. In 2011, 49 students graduated with high honors. Find the percent change in the number of students.
10.2%
300
Decide if this expression describes a difference that is positive, negative, or zero. Explain your answer.
4 + {-5}
a. zero
b. positive
c. negative
Negative, there are more negatives than positives
400
How much of a discount will Jonna have if she buys a $84.50 coat on sale for 30% off?
$25.35
400
Haley went to dinner with a group of her friends. Their bill before tax was $45.51.
If they left a tip of 20%, what was the amount of the tip?
$9.10
400
There were 40-7th grade students and 35-8th grade students in pep club last year. This year the number of 7th graders increased by 15%, but the number of 8th graders decreased by 20%.
Was there an increase or decrease in overall membership?
Decrease
400
Tammy graded 2 essays in 1/2 hour. Express this rate as a unit rate.
4 essays/1 hr
500
When you accept a job, you are given two different pay options to choose from. Option A pays you a monthly salary of $1500 plus a 7% commission on all merchandise sold. Option B pays you a monthly salary of $1800 plus a 6% commission. Which option would be best if you average merchandise sales of $4200 each month.
Option B: $2,052.00
500
Haley went to dinner with a group of her friends. Their bill before tax was $45.51.
If sales tax is 8.5%, how much will the total bill be, including tax and tip? (Tip: Sales tax is figured on the amount of the bill NOT including the tip.)
$58.48
500
There were 40-7th grade students and 35-8th grade students in pep club last year. This year the number of 7th graders increased by 15%, but the number of 8th graders decreased by 20%.
How many total members are there this year?
Find the overall percent change in membership of the club.
73 students
26.6%
500
Describe the three ways you know if a graph is proportional.