Starla bought napkins at an outlet store for $4.00 each, and she also used a $20 off coupon. if starla paid $64.00 before tax, how many napkins did she buy?

a. 22
b. 16
c. 5
d. 21

D

Step-by-step explanation:

We know that she paid 64 and before that 20 were subtracted off.

We need to add back the 20 to get 84

Then we divide the total price by the price of one 84 / 4

This gives us a total of 21 napkins bought

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

step-by-step explanation: