Which of the following statements demonstrates unit rate?
a. tony bought stationery goods worth $6.90
b. rita drives a car at 50 mph.
c. jennifer types faster than kyle in one minute.
d. the school has 90 children for every 3 buses.

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?

43lbs of tomatos cost $387. how much would 41lbs cost

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.