How much is a tax of 5% on a purchase of $27.50? show work

You multiply 27.50 with 5 and then divise by 100 (5%).It is around $1.37 to &1.38

C. B, A, C, D

Step-by-step explanation:

We know that the exponential growth function is represented by :-

, where r is the growth rate.

The exponential decay function is represented by:-

, where r is the decay rate.

Now for Company A the sales function=

⇒ It is a growth function with growth rate 0.03 or 3 %.

For Company B the sales function=

⇒ It is a decay function with decay rate 0.11 or 11 %.

Similarly for Company C, there is growth rate of 0.23 or 23% and for Company D, there is growth rate of .90 or 90 %

Thus, the rank according to the sales by smallest to largest percent of increase will be B, A, C, D