Answer:

Step-by-step explanation:
The given function is

To find k(-5), we put x=-5 into the given function to get;

Multiply out to obtain;

This is the same as;

This simplifies to

<u>Explanation:</u>
The rate is 8. It's attached to the "x". When graphed, 8 is the slope.
The y-intercept represents the initial value, or the starting amount of money in Rose's bank account.
Answer:
x = 9
Step-by-step explanation:
Given
5x - 31 = 23 - x ( add x to both sides )
6x - 31 = 23 ( add 31 to both sides )
6x = 54 ( divide both sides by 6 )
x = 9