Shirts are onsale at 3 for $15.50. how many shirts can you buy with $139.50.

First you take the $139.50 and divide it by $15.50

139.50 / 15.50 = 9

Then you take the 9 and multiply it by 3, be cause there are 3 shirts per $15.50

9 x 3 = 27

You can buy a total of 27 shirts with $139.50

it would open into a square depending on the type of envelope i’m not sure about the second part

4.5%

step-by-step explanation: