Answer:
1. 7^(x-y)
2. z^5x^y
Step-by-step explanation:
The applicable rule of exponents is ...
(a^b)/(a^c) = a^(b-c)
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1.

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2.

77 is the product of 7 and 11 (Multiply them)
77 - 17 = 60
Hope this helped!
Step-by-step explanation:
not sure about last question but...did it with all my will..
Answer:
4 inches per hour
Step-by-step explanation:
7 x 4 = 28
Answer:
838.88
Step-by-step explanation: