Question

Use technology to approximate the solution(s) to the system of equations to the nearest tenth of a unit.

Select all that apply.
1 (0,0)
2 (9.2, 1.5)
3 (9.6, 3.5)
4 (5.3, 9.8)
5 (3.5, 9.6)

Answer 1

The technology I used in helping me solve the problem is using Microsoft Excel. I made one column for the x values which were gathered from the choices, one column for f(x) whose equation is 8^(x-9), and another column for g(x) whose equation is log(3x) + 2.

Inputing these equation to the last two columns yield the values shown in the picture.The 'NUM' means that the equation at that value of x is undefined. From the values, the correct solution would be

(0,0), (9.2,1.5) and (9.6,3.5) to the f(x) equation
(9.6,3.5) to the g(x) equation