What is the value of l_-12_l? (THIS IS A STEP FUNCTION NOT ABSOLUTE VALUE SO THE ANSWER IS NOT 12) –13
–12
12
13

Two parallel lines are crossed by a transversal.what is value of x

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?

How to do this , and can some one explain