3. The following table shows the test scores and sleep averages of several students. Hours of sleep (x) 7 7 7 6 8 8 9 5 6 7 7 9 8 8
Test score (y) 90 75 70 7085 95 90 6065 80 70 85 85 100
10
8
95 90
(a) Use graphing technology (Tl calculator or Desmos) to find the linear regression equation that models
the data. Let x equal the hours of sleep and y equal test score. Explain the steps you use.
(b) Use the equation to determine the approximate test score of a student who sleeps an average of 7.5
hours a night. Show your work.

when studying polynomials, you often hear the terms zeros, roots, factors and x x the multiplicity of a zero is important because it tells us how the graph of the let's look at the graph of a function that has the same zeros

step-by-step explanation:

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

answer: x=60