What is the sum of the geometric series

15
e 2(1/4)^x
x=0

rounded to the nearest whole number?

sorry the format of it is odd, i'm not sure how else to type it. i don't know to solve this problem. answer choices are:

a. 1
b. 2
c. 3
4. 4

bull

step-by-step explanation:

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