QUESTION 4 A car maintenance company has recorded March 22; 2020 data on the maintenance cost of a car (y) and the age of the car (x). Below is the Excel output of the relationship between maintenance cost of a car and the age of a car. SUMMARY OUTPUT Regression Statistics Multiple R 0.9932180 R Square Adjusted R Square 0.9851302 Standard Error 48.761418 Observations 12 ANOVA df SS MS F Significance F Regression 1 1735129.49 1735129.49 729.75 1.11715E-10 Residual 10 23776.75 Total 11 1758906.25 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 46.40783 29.80954 1.55681 0.1505 -20.01196 112.82764 Age 86.91944 3.217565 27.01404 1.12E-10 79.75026 94.08863 The values of R square and MSE have been ommitted - You are required to calculate those values.

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!

The angle of elevation from point a to the top of a cliff is 38 degrees . if point a is 80 feet from the base of the cliff , how high is the cliff ?

Atrain traveled for 1.5 hours to the first station, stopped for 30 minutes, then traveled for 4 hours to the final station where it stopped for 1 hour. the total distance traveled is a function of time. which graph most accurately represents this scenario? a graph is shown with the x-axis labeled time (in hours) and the y-axis labeled total distance (in miles). the line begins at the origin and moves upward for 1.5 hours. the line then continues upward at a slow rate until 2 hours. from 2 to 6 hours, the line continues quickly upward. from 6 to 7 hours, it moves downward until it touches the x-axis a graph is shown with the axis labeled time (in hours) and the y axis labeled total distance (in miles). a line is shown beginning at the origin. the line moves upward until 1.5 hours, then is a horizontal line until 2 hours. the line moves quickly upward again until 6 hours, and then is horizontal until 7 hours a graph is shown with the axis labeled time (in hours) and the y-axis labeled total distance (in miles). the line begins at the y-axis where y equals 125. it is horizontal until 1.5 hours, then moves downward until 2 hours where it touches the x-axis. the line moves upward until 6 hours and then moves downward until 7 hours where it touches the x-axis a graph is shown with the axis labeled time (in hours) and the y-axis labeled total distance (in miles). the line begins at y equals 125 and is horizontal for 1.5 hours. the line moves downward until 2 hours, then back up until 5.5 hours. the line is horizontal from 5.5 to 7 hours