What is the answer in system of equations y=4x + 13 and y=6x +19

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

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.

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?