On a very cold morning, it was -8°F. As the day went on the temperature rose 2

degrees each hour. Which equation shows the temperature over time?

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y = -2x + 8

VE 1.2x

y = 2x + 8

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2/12/2020

The temperature in °F after x hours will be given by, y = - 8 + 2x.

Step-by-step explanation:

The temperature in the morning was - 8°F. Now, as the day went on the temperature rose 2°F each hour.

So, after x hours the temperature will rise by 2x°F.

Therefore, the temperature in °F after x hours will be given by, y = - 8 + 2x. (Answer)

just sum

10 + 10 = 20

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.