I'm not sure but I think it's 15
Answer: y-int is 0, 250, slope is -1/3
Step-by-step explanation:
Answers:

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Explanation:
By definition, 
Squaring both sides gets us 
Then multiply both sides by i to get 
Repeat the last step and you should get 
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Notice we have this pattern going on:

Once we reach i^4, we start the process over again.
It repeats every 4 terms.
This means we'll divide the exponent over 4 and look at the remainder. We ignore the quotient completely.
157/4 = 39 remainder 1
That remainder 1 is the exponent of the simplified term

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Similarly,
315/4 = 78 remainder 3
So 
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102/4 = 25 remainder 2

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76/4 = 19 remainder 0

First distribute and then combine like terms, answer: -1.42x+2.8