Unit Rates
Proportionality
Percent Change
Markup/Discount
Total Cost/ Interest
100
230 words in 3 minutes
76.7 words per minute
100
Is this graph proportional or nonproportional?
Proportional
100
Find the percent change:
Original - new/original = Percent Change
The class started with 90 points and by the end of class, they lost 59 points. What is the percent decrease?
a.44%
b.34%
c.54%
b.34%
100
Find the sales price:
Original Price:$45.00
Markup:22%
a.$54.90
b.$9.90
c.$45.90
a.$54.90
100
What is the total cost?
Cost of new shoes: $85
sales tax: 8.5%
$92.23
200
84 cookies in 14 boxes
6 cookies per box
200
C. The table is nonproportional
200
Find the percent change:
Original - new/original = Percent Change
The number of students in Mrs. Loveday’s class went from 26 students to 40 students. What is the percent increase?
a. 55%
b. 14%
c. 54%
c.54%
200
Find the sales price:
Cost of a computer: $1,850.00
Markup: 75%
$3,237.50
200
Find the sales tax:
Price of the new video game: $90
tax: 7%
$6.30
300
340 miles for 5 hours
68 miles per hour
300
b. The table is proportional, and the constant rate of proportionality is 4.
300
Find the percent change:
The sweater started at $45 and was discounted to $25.
44% Decrease
300
Find the Sales price:
Original price of concert tickets: $100.00
Discount: 21%
$79
300
Jeremiah placed $300 of his Christmas money in his savings account that earns 7% interest per year. What is the total amount in the account after 7 years?
a.$321.00
b.$447.00
c.$147.00
b.$447.00
400
$7.50 for 5 pounds of candy
$1.50 per pound of candy
400
If it is proportional, what is the constant rate of proportionality?
k=7
400
Find the percent change:
The new Modern Warfare game that started out as $65, is on sale for $55.
15% decrease
400
D’mariaye currently earns $20 per hour and is getting a 5% pay increase. What is his new wage per hour?
a.$20.50
b.$21.00
c.$31.00
b.$21.00 per hour
400
Mr.Waugh borrows $25,000 on a 5-year loan for his new car. He is charged a 9% simple interest per year. How much interest is he charged for 5 years?
$11,250
500
132 wins in 12 hours
11 wins per hour
500
Identify the constant of proportionality(k) and write the proportional relationship (y= kx)
a. k=1 ; y=1x
b.k=1/2; y=1/2x
c.k=2 ; y=2x
c. k=2 ; y=2x
500
What is the percent change?
The class started with 25 kids at the beginning of the year, and by the end, it had 43 kids.
72% increase
500
Christa wants to buy a new scarf for Christmas that costs $35, however, it is marked up by 15% for their winter sale. How much would she have to pay?
$40.25
500
Caleb finds a shirt on sale for 10% off at a department store. The original price was $25. Caleb must also pay an 8% sales tax. How much will Caleb pay for the shirt?
$24.30