The volume of water in a tank is modeled by the function y = 1.15 x^3 - 0.1 x^2 +2 where x is the number of minutes after the faucet filling the tank is turned on. (a) What is the y-intercept of the graph ? (b) what does it represent in this context?

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6

on the middle line

step-by-step explanation:

1/5=50

so the rectangle is 80cm (area)

now to find the area of a triangle.

base times height.

4 times 8.

your answer is 96cm.

hope this .