The answer is B because if you have 10000 hours you subtract by 3000 and it’s equals b
By subtracting c on both sides
F(x)= 9x^3 + 2x^2 - 5x + 4
g(x)= 5x^3 - 7x + 4
f(x) - g(x)
9x³ + 2x² - 5x + 4 - (5x³ - 7x + 4)
9x³ + 2x² - 5x + 4 - 5x³ +7x - 4
9x³ - 5x³ + 2x² -5x + 7x + 4 - 4
4x³ + 2x² + 2x
OK
The first one would be
8.34625
The second one would be
22.89104
H0P3 It H3LPS :)
