A student places a sample of coon a hot plate and then records the temperature of the ice over the course of 30 minutes. She plots hordata on the graph shown below Temperature of leon
is happening between minutes 8 and 15 ) Do not
Answer the to following questions, making sure to include the part you are answering (Example 1 the energy is
plagiarize your answer! You must answer in your own words!
1 Describe the direction of thermal energy flow between the hot plate and the ice
2 Use the graph to describe what is happening in regards to energy and temperature between minutes 8 and 15 of being on the hot plate

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

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.