A. y=-2/3x-2
B.2/3x-2
C.3/2x+3
D. y=-3/2x+3

Average acceleration: i have no idea how to do this.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

How do i put 3(x+7) in distributive property