7 doesn't go perfectly into 60. So it can only go in 8 times and you'll have a remainder of 4. I hope this helped :)
If the answer is an equation then it is:
x=(4y+15)/(5-3y)
No she dident
1 ft=12 in
8x12= 96
She needs 4 more inches to get 100
15 is the half of 30 keep counting so when you get to 50 the number you have is the answer
I think the answer is b because it make the most sense