Please i need helpI (need Help with this (Solving Equations with Efficiency) Topic: Systems of Linear Equations.

There's two Equations

1. 1/4(x-5)+9=1/2x

2.5/4(x+1/2)+8=1/8x

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.

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?

If wxyz is a square, which statements must be true? plz < 3