Traveling at 65 miles per hour, how many minutes rounded to the nearest whole number, does it take to drive 125 miles from san diego to mailbu?

65 miles per hour meaning 65 miles in 60 minutes

65/60 = 1.083mile per minute

125/ 1.083 = 115.4 minutes to drive from san diego to malibu

check

115.4 x 1.083 = 124.97 (round up)

= 125

therefore it takes 115.4 minutes to drive from San Diego to Malibu

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