F(x)=3x-1 and g(x)=x+2, find (f-g)(x)

A. 2x-3
B. 2x-1
C. 4x+1
D. 3-2x

2x-3, choice A

Work Shown:

(f - g)(x) = f(x) - g(x)

(f - g)(x) = (3x-1) - (x+2)

(f - g)(x) = 3x-1 - x-2

(f - g)(x) = (3x-x) + (-1-2)

(f - g)(x) = 2x-3

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20