The telephone company offers two billing plans for local class. plan 1 charges $37 per month for unlimited calls and plan 2 charges $12 per month plus $0.04 per call. a. use an inequality to find the number of monthly calls for which plan 1 is more economical than plan 2.
b. Explain the meaning of the answer to part a

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the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

1) letter c.

2) 4 square root of 9

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