Mary and jerry are exercising on a track. mary is walking at a rate of 3 miles per hour jerry starts jogging at a rate of 4 miles per hour after mary has been walking for 15 minutes jerry jogs 2 miles as mary continues walking and they both stop at the same time enter the total distance in miles that mary walks around the track

2 and 1/4 miles is how far Mary walks around the track. This is because she walks for 15 minutes before Jerry gets there, which is 0.75 miles at 3mph. Then Jerry goes for 2 miles, which is half an hour. Half an hour is double 15 minutes, so it's double 0.75 miles. So 0.75 plus 1.5 = 2.25

Step-by-step explanation:

554.4

step-by-step explanation:

44*12.6=544.4

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.