Caitlin's Science Professor Gives an a for an Average Of 85

question 79

Essay

Caitlin's science professor gives an A for an average of $85$ or better, and a B for an average of $75$ or better in her course. Caitlin has obtained scores of $84,71$ , and $77$ on her midterm examinations. If the final exam counts for as much as the three midterms together, what score must she get on her final exam to receive a B? To receive an A? (Assume that the maximum possible score on each test is $100$ .)

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Definitions:

Repaid

Repaid pertains to the act of paying back money that was borrowed from an individual or institution.

Compound-Interest CSB

An interest calculation method, possibly referring to Canada Savings Bonds, where earned interest is added to the principal, and future interest calculations are based on the new total.

Redeemed

The act of repaying or buying back a security or loan, often before it matures.

Guaranteed Minimum

The lowest amount assured by a contract, regardless of external conditions or outcomes.