Trial and error on this one try each pair till you find negative slopes
C and D
A unit rate is just how much it costs per ONE unit of whatever your measuring. Lets say you had a rate of $4.00/8lbs. The unit rate would be $0.50/ ONE lb.
I’m really not to sure sorry about that
X + 2/3 = -2(4/5x-7)
Is equivalent to -2(x+2/3)=4/5x-7
So the answer would be A
The trip back the boat will travel only 30 miles because the trip doubled the hrs.