Question

Ricardo and Kim rowed their canoes from their base camp to a fishing camp. They rowed a distance of x miles upstream on one river, (3x2 − 9) miles downstream on another river, and (2x + 9) miles across a calm lake. Which expression is equivalent to the total distance, in miles, Ricardo and Kim rowed their canoes?

5x2
6x2
3x2 + 2x
3x2 + 3x

Answer 1

add the equations

Answer 2

Ricardo and Kim rowed their canoes from their base camp to a fishing camp. They rowed a distance of x miles upstream on one river, (3x2 − 9) miles downstream on another river, and (2x + 9) miles across a calm lake. Which expression is equivalent to the total distance, in miles, Ricardo and Kim rowed their canoes?

5x2
6x2
3x2 + 2x
3x2 + 3x

Answer 3

I agree with @ivettef365 we would add the equations....

Make sure when posting the equations with \(\Large{x^{2}}\) that you indicate it with a cart or ^....

Answer 4

add
3x^2 -9 + 2x +9

Answer 5

5x^2

Answer 6

no, combine like terms, so the only thing you can do is -9 +9 which is 0
so you have left 3x^2 + 2x

Answer 7

you can only combine like terms