C because he obviously doubled it and 3 hours doubled is 6 hours
So all sides together are 42 meters.
Two of the sides are 6 meters.
So 42-(2*6) = 30 is left for the other two sides, that's 15 meters per side.
It would be (x)(x+7)=170
If you want it solved, then you would get:

=0
(x+17)(x-10)=0
And since you can't have a negative length (-17), x=10
So your side lengths would be 10 and 17 (10+7), which would give you an area of 170.
Hope that helps.
True.
If the clock loses 1 second every hour that passes then after 4 hours it will be 4 seconds off, 5 hours will be 5 seconds off, etc. It would continue and turn into minutes and hours off.
<span>the unit rate corresponds to the proportional relationship
shown in the graph is equivalent to the slope of the line. Which can be solve
using the formula:</span>
m = (
y1 – y2 )/ ( x1 – x2 )
m = (
0 – 9 ) / ( 0 – 6)
<span>m =
3/2</span>