Which of the following could NOT be the side lengths of a right triangle?
A. 7.5, 10 and 12.5
B. 85, 13 and 84
C. 37, 35 and 12
D. 24, 22 and 40

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

I’m confused on how to work the pie charts

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?