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Frank T.
Graduate Engineer with 4+ Years of Tutoring Experience
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Pre-Algebra
TutorMe
Question:

A cell phone company charges a monthly rate of $12.95 and $0.25 a minute per call. The bill for m minutes is $21.20. Write an equation that models this situation.

Frank T.
Answer:

m = Number of Minutes Billed 0.25m + 12.95 = 21.20

Calculus
TutorMe
Question:

Frank received a salary of $45,000 per year. In addition, he receives 7% of his sales amount for the year. What are the sales amounts that will allow him to earn more than $56,900 per year?

Frank T.
Answer:

Frank = $45,000/Yr (Base) Expected Earnings = $56,900/Yr Base + .07 (Sales Amount) X = Annual Sales Amount = 45,000 + .07x > 56,900

Algebra
TutorMe
Question:

Bill has (A) chocoloates, and (B) drinks. Brian has four fewer chocolates than Bill, but twice as many drinks. Write an expression for Brian's snacks.

Frank T.
Answer:

Brian has four fewer chocolates than Bill = A - 4 Brian has twice as many drinks = 2 x B A - 4 + 2 x B => A - 4 + 2D

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