Answer:
~28
Step-by-step explanation:
5 feet 3 inches is 5.25 feet.
We divide 7/5.25 which equals 1.3333333333333 (repeating)
That means we multiply 21 by 1.333333333333 which would round up to 28 feet. (the exact answer is 27.99999999999999999)
B is the correct answer i think
7)X=20
8)X=14
9)X=45.83 repeating
10)X=-19
11)X=100
12)X=-25