HELP! Will be giving branliest and extra points
Please give an explanation if possible!

A. $10.93

Step-by-step explanation:

Because if the answer includes the tax and tip that means the total cost of the meal doesn't change.  It's asking how much each person's meal costs. There are 5 people, so you take the total cost of the meal and divide by 5.

You will get something like this:

54.65/5=

when you solve that equation you end up with the answer;

10.93

D.  (-infinity, 2)

This is the interval

On this interval, the function curve is going downhill as you read it from left to right.

More technically, the function is decreasing on this interval because f(a) > f(b) where a < b. For example, f(0) > f(2) and note that 0 < 2.