Question

Find f(2 + x) If f(x) = 4x - 5

Answer 1

To find f(2 + x) when f(x) = 4x - 5, substitute (2 + x) into the expression for f(x) and simplify.

Step-by-step explanation:

To find f(2 + x) when f(x) = 4x - 5, we substitute (2 + x) into the expression for f(x). This gives us f(2 + x) = 4(2 + x) - 5. We simplify this to get f(2 + x) = 8 + 4x - 5

Combining like terms, we have f(2 + x) = 4x + 3. Therefore, the function f(2 + x) is equal to 4x + 3.

Answer 2

Replacing x with 3 in 4x-5 tells us f(3) = 7

Step-by-step explanation:

to evaluate f (3), just replace all x in f(x) = 4x - 5 with 3 :

f(3) =4(3) - 5 = 12 - 5= 7