A snowboard's elevation, in feet, can be represented by the function E(t) = 3000 - 70t, where t is in seconds. Graph the function and find the elevation of the snowboarder after 30 seconds.

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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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).

113.42

i hope that is right.

step-by-step explanation:

your answer is  

d.

196.5 m2

step-by-step explanation: