Marc can afford a $750 monthly mortgage payment. if the current mortgage rates are 5% and he wishes to have a 30-year mortgage, what is the maximum amount he can afford to borrow? a. $136,000 b. $137,653 c. $136,280 d. $139,711

the answer will be b x² +x-1

step-by-step explanation:

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:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8