Acompany rents cars at $45 a day and 12 cents a mile. its competitor's cars are $60 a day and 5 cents a mile. (a) for each company, give a formula for the cost of renting a car for a day as a function of the distance traveled. assume distance m is measured in miles. assume cost c is measured in dollars. first company: c(m) =

d.192

step-by-step explanation:

12*16=192

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this