Question

Find the quotient.
5^7/5^3

a.5^4
b.5^10
c.8^15
d.8^21

Answer 1

if the base is the same (5, in this case)
... you can subtract the denominator exponent from the numerator exponent

Answer 2

5^7/5^3 = 5^(7-3) = 5^4
because
5*5*5*5*5*5*5
---------------------- = 5*5*5*5
5*5*5