proportional relationships

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours. How much will Craig earn per hour?

• $37

• $64.75

• $9.25

• $18.50

The cost of 4 pounds of grapes is $24.36. What is the constant of proportionality that relates cost in dollars, y, to the number of pounds of grapes, x?

• 6.09

• 20.36

• 8.12

• 28.36

Which one is correctly written ratio sentence for the constant in the equation: W = 2c where W is the number of watermelons and c is the number of children.

• For every 2 watermelons, there is 1 child.

• W = watermelon and c=children

• For every 2 children, there is 1 watermelon.

• Every child gets a watermelon.

What is the constant of proportionality (in miles per hour) based on the table?

• 45
• 90
• 135
• 2

Tags

CCSS.7.RP.A.2B

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2