Which rate is a unit rate?

a. 48 minutes / 4 quarters
b. 40 hours / 5 days
c. 1 week / 7 days
d. 34 miles / 1 gallon

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?