I feel bad for what i have done to get points so every friday ima do a give away for 100 points and brainliest <3 but i need help so here is the question:Use rounding to estimate the product. 11.45 × 5

114
60
50
55

The answer to 11.45 x 5 is not listed, but if we rounded it, the closest answer would be 60.

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

1

step-by-step explanation:

it's the only multiple of both and the least