I believe it is D, because if you divide 2/6 its .333 minus 1.25/6, which is .124.
For this case, the first thing we must do is define variables:
x = number of quarters
y = number of dimes
We now write the system of equations:
x + y = 28
0.25x + 0.10y = 4.05
Solving the system of equations we have:
x = 8.33
y = 19.66
Rounding:
x = 8
y = 20
Answer:
the college student has:
8 quarters
20 dimes
volume = 7*7*2 = 49*2=98
she needs to get 98 cubic feet of sand
I just told you the answer it is -5
