The concentration, in parts per million, of a type of antibiotic in a human's bloodstream after h hours can be modeled by the polynomial -0.06h^2+2h+4=a(h). what is the concentration of the antibiotic after 4 hours

The concentration of antibiotic after 4 hours will be 11.04 ppm (parts per million).

Step-by-step explanation:

Given that the concentration of antibiotics after h hours can be given by the polynomial:

-0.06h^2+2h+4=A(h)

For h=4, equation will be:

-0.06 (4)² + 2 (4)+4= A (4)

11.04 = A (4)

The concentration of antibiotic after 4 hours will be 11.04 ppm (parts per million).

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: