Answer:
(x+3)(x+7)
Step-by-step explanation:
3 and 7 are factors of 21, and they add up to 10.
(a) 3(x-1) = 2x-3+3x
3x-3 = 5x-3
3x-5x = 0
-2x =0
x = 0
(b) 4x +1/3 = x - 5/2
4x-x = -5/2-1/3
3x = -17/6
x = -17/6 . 1/3
x = - 17/18
(c) 1/2 x - 17 = -23
1/2 x = -6
x = -6.2
x = - 12
Looks like graph A represents the growth
Find the x intercept of the line from substituting y=0, then find the y intercept of the line from substituting x=0 then draw a line connecting these two points