Question

Can somebody help its just 2 questions

Answer 1

First Answer: Susan got back 30.25$

Second Answer: Mrs. Smith needs to add 7/2 or
`3(1)/(2)` cups of sugar.

Hope this helps!

Explanation:

5 books for 13.95 is 5*13.95 = 69.75

If she paid with a 100 dollar bill then it would be 100 - 69.75 which equals 30.25.

`1(3)/(4)` can be turned into
`(7)/(4)`, that will then be timed by 2 ( because she needs double ) to become
`(7)/(4)*2 = (7)/(2)`