An event management company purchases a new van. The value of the van, x years after the purchase, is shown in the table. Time (years) 0 1 2 3 Value (dollars) 20,000 18,000 16,200 14,580 Which statement is true? A. The situation can be modeled by an exponential decay function with a percent change of -10%. B. The situation can be modeled by an exponential decay function with a percent change of -11%. C. The situation can be modeled by an exponential growth function with a percent change of 11%. D. The situation can be modeled by an exponential growth function with a percent change of 10%.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

example answer: "to determine if a sum is reasonable you can round each number to the nearest whole and compare the estimated sum to the actual sum."

hope this you and anyone else who needs the answer : ^)

the answer is b.

surface area: 169π

volume: 366π

i got it down.