If g(x) = 2(x - 4), find the value of x if g(x) = 20.

Solution:

Given, g(x) = 2(x -4)

We have to find the value of x when g(x) = 20.

So, 2(x - 4) = 20

x - 4 = 20/2

x - 4 = 10

x = 10 + 4

x = 14

Therefore, the value of x is 14.

Example: If g(x) = 3(x - 5), find the value of x if g(x) = 21.

Solution:

Given, g(x) = 3(x - 5)

We have to find the value of x when g(x) = 21.

So, 3(x - 5) = 21

x - 5 = 21/3

x - 5 = 7

x = 7 + 5

x = 12

Therefore, the value of x is 12.

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If g(x) = 2(x - 4), find the value of x if g(x) = 20.

Summary:

If g(x) = 2(x - 4), the value of x if g(x) = 20 is 14.