Hey there!
The answer is D. 1/5
An explanation is in the attached image below.
Hope this helps!
If two lines are parallel to one another, then their slopes are identical. The slope in the line above is 3/4. Therefore, a line parallel to that line will also have a slope of 3/4, it will just have a different y-intercept.
Yes he does because the final price would be $7.95.