G (n) = n² - 40

f (n) = 2n - 5

Find (gºf) (4)

A=3

B=59

C=-5

D=45

E=117

The value of (gof) (4) is - 31

Step-by-step explanation:

Given as:

g (n) = n² - 40

f (n) = 2n - 5

So, (gof) (n) = (2n - 5) ² - 40

Or, (gof) (n) = 4n² - 20n + 25 - 40

Or, (gof) (n) = 4n² - 20n - 15

Now At n = 4

I. e (gof) (4) = 4 (4) ² - 20 (4) - 15

Or, (gof) (4) = 64 - 80 - 15

Or, (gof) (4) = - 31

Hence The value of (gof) (4) is - 31 Answer