Valerie’s meal costs $32.75 and Derek’s meal costs $39.88. Valerie treats Derek by paying for both meals, and leaves a 14%tip. Find the total cost.

82.7982 (not rounded)

Step-by-step explanation:

step one: add $32.75 and $39.88 to get $72.63

step two: find 14% of %72.63 which is 10.1682

step three: add the tax and the cost of the meal ($72.63+$10.1682) to get $82.7982

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).