Which expressions are equivalen] to x^3 + 9x^2 ? Choose all answers that apply:
A
2(x + 3i)(2 – 3i)
B
22(2 +9)
2(x - i)(2+9i) – 8xi
D
(x2 + 3ci)(2 – 3i)

i believe the answer is the polygon, heptagon.

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:

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b

there are infinitely many solutions.