The last one is -1/2 but I’m lost and need help

f the borrower, the amount borrowed, and the loan-to-loan value (LTV) ratio. The LTV ratio is the ratio of amount borrowed to appraised value of the home. For example, a homebuyer who wishes to borrow $250,000 with a credit score of 730 and an LTV ratio of 80% will pay 0.5% (0.005) of $250,000, or $1,250. The table shows the LLPA for various credit scores and an LTV ratio of 80%. (see picture)

(a) Construct a function C=C(s), where C is the loan-level price adjustment (LLPA) and s is the credit score of an individual who wishes to borrow $300,000 with an 80% LTV ratio.

(b) What is the LLPA on a $300,000 loan with an 80% LTV ratio for a borrower whose credit score is 725?

(c) What is the LLPA on a $300,000 loan with an 80% LTV ratio for a borrower whose credit score is 670? ​

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i could probably can you me with a question of mine?

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boxplot e is the answer