A 2000 meter train leaves the train station traveling at a constant speed of 10 meters per second. A car parked at the back of the train leaves at the same time and after 100 seconds reaches the front of the train traveling at the same speed as the train. Let the f(t) = 10t be a model for the position in meters of the front of the train at t seconds. Write a function g(t) which is a model for the position in meters of the car at t seconds.

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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).

the answer is c hope this