Bill before tax is $52.60 and the sales tax 8%

the final cost will be about $56.81

Step-by-step explanation:

Here is the price after taxes:

8% of 52.60 = 4.20800

Now add that to the real price:

52.60 + 4.20800 = 56.808

Round to nearest tenth:

56.808 = about $56.81

  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).