Sales clerk at an appliance store have a chance of 2 payment:

Question

Plan A: $580 every 2 weeks plus 4.2 % commission on all sales
Plan B: $880 every 2 weeks plus 1.2 % commission on all sales

a) Write a linear system to model this situation
b) Graph the linear system in part a
c) Use the graph to solve this problem: What must the sales for a 2-week period be for a clerk to receive the same salary with both plans?

Answer 1

incomeA = 580 + .042x , where x is total sales
incomeB = 880 + .012x

to sketch it, you obviously have to scale the x-axis and the income axis