Hello,
if x represents the abscissa
and y the ordinate then
the product is x*y
Answer A
I'm sorry I'm too lazy to read all of that. However, I did get the main point. The river was going at 3 mph. Since he wanted to travel 10 miles upstream and downstream, you would have to subtract 20 by 3. This would mean he was going at a speed of 17 mph.
The answer is b.
A is in the negatives, and there are no negative years.
B works ; it starts at 150, is positive, and slowly reaches 300
C is exponential and goes to fast.
D starts at 0 not 150
So the answer is b.
Hope this helps!
