Which of the following piecewise functions accurately represents charges based on bens cell phone plan?

What is the answer to |-2x-5|-|-4+8| and x=7

Me! last question, and i'm stuck! write the algebraic expression that models the word phrase. the product of 2 divided by the number h and 8 more than the number k

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.