The cross section of a wooden storage structure can be modeled by the polynomial function -3/80(2x-40)(2x+40) where x and y are measured in feet, and the center of the structure is where x 5 0. a. Explain how to use the algebraic model to find the width of the structure. b. Use the model to find the structure's width. Show your work c. Use the model to find the coordinates of the center of the structure. Show your work.

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

answer: b f g .

step-by-step explanation:

um is there supposed to be a picture?

it should be described as a proper fraction.