What is the slope of the line through (4,-2)and (-1,5)?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?