Question

The table shows the advertising expenditures X and sales volumes Y for a company for 9 randomly selected months. both are measured in thousands of dollars.

(a) Use the regression feature of a graphing utility to find a linear model for the data.

(b) Use the graphing utility to plot the data and graph the model in the same viewing window.

(c) Interpret the slope of the model in the context of the problem.

(d) Use the model to estimate sales for advertising expenditures of $1500.

Answer 1

Y=45.7x+108- Linear math model.
I used desmos to plug in the data and used y~mx+b to get the slope and y-intercept.
There would be 68,658 sales.
Plug in the 1500 in the place of the x in the math model and just put it in the calculator to get to this answer.