Answer:
4x²(9+16-9x)
=36x²+64x²-x³
=100x²-x³
4 hours
Step-by-step explanation:
3 x 12 = 36
36/9 = 4
mike can afford 7 model cars
C
sum= -3 product=-4
2x^2-2x+8x-8
2x(x-1)+8(x-1)
(2x+8)(x-1)
x=-4 x=1
