If y varies directly with x and y = 15 when x = 5, what is the value of k?

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Which is f(5) for the function –2x2 + 2x - 3?