Two students withheld their scores to determine the strength of the model. using the actual line of best fit equation, predict their scores based on their hours worked. actual line of best fit: y= 4.81x + 17.4 hours (x) | score (y) 15 | ? 9 | ?

The value of y is 89.55 at x=15 and 60.69 at x=9.

Step-by-step explanation:

The equation of best fit line is

where, y is scores of two students after x working hours.

We need to find the score after 15 and 9 hours.

Substitute x=15 in the given equation.

Substitute x=9 in the given equation.

Therefore, the value of y is 89.55 at x=15 and 60.69 at x=9.

Please find the attached traced distance time graph

Step-by-step explanation:

The given parameters are;

The time at the start of Don's journey = 2 pm.

The distance Don drives one hour after leaving home = 45 miles

The speed (Distance/time) Don drove during that time = 45/1 = 45 mph

The time at which Don first stop driving = 2 pm + 1 hour = 3 pm

Don then stops for 90 minutes

The time after the duration at which Don stops driving = 3 pm + 90 minutes = 3 pm + 1.5 hours = 4.30 pm

At 4.30 pm. Don then starts driving home at 15 mph

The distance from Don's home from where Don stopped is 45 miles, therefore;

Time (Distance/speed) for Don to get home = 45 miles/15 mph = 3 hours

Time Don arrived home = 4.30 pm + 3 hour = 7.30 pm.