Exponential rules state that when you divide exponents, you subtract by the powers. The powers have the same coefficients, so you can divide the two numbers.
6 - (-3) = 9
The answer is

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If its on a graph just look for the spot where the line meets the y and x-axis
B is just simply the y intercept
Answer:
C. 5/8+3/8=8/8
Step-by-step explanation:
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Answer is in the attachment below.