What is the value of the x-coordinate of the vertex of the function shown below?
f(x)=(x+4)(x-2)

i think it's either c or d

step-by-step explanation: the entire question is extremely odd. 04 obviously refers to the interest rate. honestly i will say the answer is c. because the (2 x 12) part would mean it's compounded semiannually. i'll say choose c.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value