Question

Suppose g(x) = 3 + 5x.

What is the value of x when g(x) = 23?
(Hint: If 23 and g(x) are equal, then you can substitute 23 for g(x) in the orginial function).
Your answer:
118
5
15
4

Answer 1

9514 1404 393

Answer:

4

Explanation:

Substitute the given value for g(x) and solve the 2-step equation for x.

g(x) = 3 + 5x

23 = 3 +5x

20 = 5x . . . . . . subtract 3

4 = x . . . . . . . . divide by 5

The value of x is 4 when g(x) is 23.