Answer: The required total cost of the meal is $73.525.
Step-by-step explanation: Given that Mario takes his best friend out for lunch, the total bill is $86.50 and he leaves a 15% tip.
We are to find the total cost of the meal.
The total cost of the bill is equal to the difference of the total bill and the amount that was left for tip.
The amount of the tip is given by
Therefore, the total cost of the meal is
Thus, the required total cost of the meal is $73.525.
9514 1404 393
Answer:
-4
Step-by-step explanation:
The points at the ends of the interval are ...
(3, f(3)) = (3, 8)
(6, f(6)) = (6, -4)
The slope is given by the slope formula:
m = (y2 -y1)/(x2 -x1)
m = (-4 -8)/(6 -3) = -12/3 = -4
The average rate of change is -4.
