Acar tracked 649 miles at a certain speed. if the speed of had been 8 mph faster, the trip could have been made in 4 hours less time. find the speed.

Step-by-step explanation:

let s be speed and t be time taken

s*t=649

(s+8)(t-4)=649

st-4s+8t-32=649

-4s+8t-32=0

4s=8t-32

s=2t-8

2t=s+8

t=4+s/2

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

sorry i need the points

step-by-step explanation:

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