The table below shows some values of f(x) and g(x) for different values of x:x f(x) = 2x + 24 g(x) = 5(0.5)x−2 20 −1 0 51 2.52 28 Complete the chart and determine the solution of the equation f(x) = g(x). (5 points) x = −2 x = −1 x = 1 x = 20
Accepted Solution
A:
The first thing we must do for this case is to complete the table. We have then: For f (x) = 2x + 24: f (-2) = 2 (-2) + 24 = 20 f (-1) = 2 (-1) + 24 = 22 f (0) = 2 (0) + 24 = 24 f (1) = 2 (1) + 24 = 26 f (2) = 2 (2) + 24 = 28
For g (x) = 5 (0.5) ^ x: g (-2) = 5 (0.5) ^ - 2 = 20 g (-1) = 5 (0.5) ^ - 1 = 10 g (0) = 5 (0.5) ^ 0 = 5 g (1) = 5 (0.5) ^ 1 = 2.5 g (2) = 5 (0.5) ^ 2 = 1.25 The table is: x f(x) g(x) -2 20 20 -1 22 10 0 24 5 1 26 2.5 2 28 1.25 f (x) = g (x) occurs for: x = -2
Answer: -2 20 20 -1 22 10 0 24 5 1 26 2.5 2 28 1.25 f (x) = g (x) ----> x = -2