F(x)=-4x+2 g(x)=6x+4

Fog , gof =?

 f(x) = -4x + 2
g(x) = 6x + 4

(f · g) = (-4x + 2)(6x + 4)
(f · g) = -4x(6x + 4) + 2(6x + 4)
(f · g) = -4x(6x) - 4x(4) + 2(6x) + 2(4)
(f · g) = -24x² - 16x + 12x + 8
(f · g) = -24x - 4x + 8

(g · f) = (6x + 4)(-4x + 2)
(g · f) = 6x(-4x + 2) + 4(-4x + 2)
(g · f) = 6x(-4x) + 6x(2) + 4(-4x) + 4(2)
(g · f) = -24x² + 12x - 16x + 8
(g · f) = -24x² - 4x + 8

3you can not round up to four, as there was not a full payment for the fourth night, so uou would round down to 3