Jacob is 20 miles west of a meeting with Mark. Mark is 15 miles east of the meeting place. Jacob and Mark each leave at noon and arrive at the same time. If Jacob travels 40 miles per hour, how fast does Mark drive?

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

answer4 to the second power is 16

and 4 to the third power is 64,