Part A: Scatter plot with best-fit line attached. You'll find the line to have equation (approximately)

The positive slope suggests that test scores and study time are directly are proportional.
Part B: Same as in a previous question you had posted. Pick two points on the provided line and compute the slope as best you can. For example, I might pick (2, 30) and (4, 40), which gives a slope of

and assuming the line passes through (2, 30) exactly, it would have equation

Answer:
The mileage is 2,300 miles
Step-by-step explanation:
Let x be the number of miles driven.
<u>Primo:</u>
$47 per day
$0.30 per mile
$0.30x per x miles.
Total cost 
<u>Ultimo:</u>
$26 per day
$0.95 per mile
$0.95x per x miles.
Total cost 
If Ultimo charge is three times the Primo charge, then

Solve this equation:

The answer would be 6.4% because you have to do 16% of 40 and it will give you 6.4 and as a percent it is 640%
Answer:
7:51 pm
Step-by-step explanation:
I believe the answer would be
-1 1/3