Simplify the given expression. Write your answer with positive exponents. (x−4y3)−5

This is the same as writing (x^20)/(y^15)

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Work Shown:

In the second step, I used the rule that (a*b)^c = (a^c)*(b^c)

In step 3, I used the rule (a^b)^c = a^(b*c)

In the last step, I used the rule a^(-b) = 1/(a^b)

b.-4 units

all you   do is count how many times you move

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