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?

Answer 1

Add up the three expressions and tell me what you get

Answer 2

You add them up because they want the total (or sum)

Answer 3

(3x^2+2x)

Answer 4

close

Answer 5

the +9 and -9 add to 0, so that's correct

Answer 6

but x+2x is not 2x

Answer 7

3x is squared and 2x and 3x squared are not ike terms

Answer 8

so u cant add them

Answer 9

look at the first x

Answer 10

and add this to the 2x in 2x+9