Answer: 
Step-by-step explanation:

Plug in your values.

Square 1ft.

Plug this into a calculator or do it manually.

I hope this helps you
Area=length.width
Area=5.10
Area=50
C=7•2=14 this should be right idk
(6.75/ 100) X 4.95 = .334
For one magazine the sales tax is $0.334.
Since, both magazine are of same prize. The total she paid for both magazine will be 4.95 + 0.334 + 4.95 + 0.334 = $ 10.57.
(15 is your answer)
Divide numerator by denominator, cancel out any common factors