The average allowsnce money of ernest jack david and mike is 123 per month per person. the average allowance of ernest jack and david is 159 per month per person. david’s monthly allowance is 2 less than mikes and mikes monthly allowance is 1/18 of jacks. how much allowance does ernest get

c

-by-step explanation:

it would be c

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step-by-step explanation:

c

step-by-step explanation: easy math

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).