Question

F(x) = x + 4: find f(4) and f(x) = 10

Answer 1

f(4) = 8

f(6) = 10

Explanation:

Step 1: Define

f(x) = x + 4

f(4) is x = 4

f(x) = 10

Step 2: Find f(4)

f(4) = 4 + 4

f(4) = 8

Step 3: Find f(x) = 10

10 = x + 4

x = 6