Question

A company can make 60 computers for $58,200, and can make 90 computers for $85,200. write an equation that represents the cost, c, of x computers.

Answer 1

(60,58200) , (90,85200)
slope = (85200 - 58200) / (90 - 60) = 27,000/30 = 900

y = mx + b
slope(m) = 900
(60,58200)...x = 60 and y = 58200
sub and find b, the y int
58200 = 900(60) + b
58200 = 54000 + b
58200 - 54000 = b
4200 = b

ur equation is : C(x)  = 900x + 4200 <== ur equation