In the following estimated regression equation ŷ = b0 + b1x, a. b1 is the intercept. b. b1x is the slope. c. b1 is the slope. d. b1x is the intercept.

Option C) is the slope

Step-by-step explanation:

We are given the following in the question:

The estimated regression equation is:

where is the dependent variable and need to be predicted and x is the independent variable and is the predictor.

If we compare this regression equation to slope intercept form of straight line,

Here, m is the slope if the line and c is the y-intercept hat is the value of y when x is zero.

Comparing the regression equation to the slope intercept form, we get,

Slope, m =

Intercept, c =

Thus, the correct answer is:

Option C) is the slope

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt