#1**+3 **

Honestly we can already cancel out 3 of these answer choices because they just don't make since (A,B,D) C is the only one that makes total sense.

63 miles per hour

63*4= 252

63*6=378

63*8= 504

63*19=630

Hope this makes sense!

RainbowPanda Aug 27, 2018

#2**+2 **

Correct me if i'm wrong CPhill and if you'd like to explain it a bit better then I did, that would be great

RainbowPanda
Aug 27, 2018

#3**+3 **

You are correct, RP....63 mph is the answer !!!

Here's another way to figure it

Assuming that the data points are linear...let ( x , y) = ( 4 , 252) and (6 , 378)

The slope between these will be the rate of change

[ 378 -252 ] / [ 6 - 4 ] = 126 / 2 = 63 miles / 1 hr

Just as RP found....!!!!

CPhill Aug 27, 2018