I'm not understanding the concept of how to do this problem

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

The table represents a linear function. what is the slope of the function? –6 –4 4 6

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar