What does x equal in the following equation? x 9 = 20

A

x = 29

B

x = 11

C

x = 2 . 2

D

x = 180

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4