Alexandra and Dana both leave the restaurant at the same time, but in opposite directions. If Dana travels 4 mph faster than Alexandra and after 3 hours they are 102 miles apart, how fast is each traveling? Alexandra is traveling mph,
Dana is traveling mph.

the answer is 99.

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.