Probably C. 30 Hope this helps I might wrong sometimes
Answer: 9^-8
Step-by-step explanation:
To get single positive exponent,
9^-5 / 9^3
Since the exponent is same
So we can solve the coefficient like this
9^-5-3
So
9^-8
It is already in simplest form as it has a smaller total of the numerator than of the denominator. 7 2/3- 3 1/6= 4 1/2
divide 400 by 24
400 / 24 = 16.666
so they would need to buy 17 crates