Question

The functions fand g are defined as follows. f(x) = 4x²-x g(x)=-3x+4 Find f(-5) and g (7). Simplify your answers as much as possible.​

Answer 1

f(-5) = 105

g(7) = -17

Explanation:

Finding f(-5):

To find f(-5), we plug in -5 for x in f(x) = 4x^2 - x and simplify:

f(-5) = 4(-5)^2 - (-5)

f(-5) = 4(25) + 5

f(-5) = 100 + 5

f(-5) = 105

Thus, f(-5) = 105.

Finding g(7):

Similarly, we can find g(7) by plugging in 7 for x in g(x) = -3x + 4:

g(7) = -3(7) + 4

g(7) = -21 + 4

g(7) = -17

Thus, g(7) = -17