What is the square root of 324/81

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?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

[tex]5 \times1 \frac{12}{13} [/tex] me