What is the value of x?

(x+15)
(4x-20)
(x)

a-x=32
d-x=40
i eliminated b and c
need

If jm equals 5x -8 and lm equals 2x -6 which expression represents jl

Ineed with this problem 21 show steps

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.