Question

A car company tested a sports car on a road with different inclines. The test driver tested the car by driving a distance of x miles on a flat road, (x2 + 3) miles downhill, and (x - 7) miles uphill. Which simplified expression is equivalent to the total distance, in miles, for which the car was tested?

3x2 − 4

3x2 + 10

x2 + 2x - 4

x2 + 2x + 10


I suck at word problems

Answer 1

@HawkCrimson @AravindG

Answer 2

add all three of them together :)

Answer 3

Therefore, x + (x2 + 3) + (x - 7), work it out and let me know wat u get :)

Answer 4

-2x?

Answer 5

sorry i'm really dumb at math

Answer 6

Do you know what "like terms" means?

Answer 7

yeah

Answer 8

Total distance = (Flat ground) + (uphill) + (downhill)
Then group like terms.

Answer 9

i have no idea

Answer 10

(x) + (x^2 +3) + (x-7)
Can you name a couple of "like terms?"

Answer 11

x and x^2

Answer 12

Nope. Those are not like terms.

Answer 13

because the x is in front of the 2?

Answer 14

x^2 is "x squared"
It was a totally different type of term than x.

Answer 15

If I have something like
2x + 3x, think of it as counting up Xs. You have 2 x, then you add 3 x. You end up with 5 x overall.

Answer 16

You can count them up because they are like terms.

Answer 17

i think its a just guessing

Answer 18

Similarly, you can do 4 + 1 = 5 because 4 and 1 are like terms.
Or you could add up x^2s.
3x^2 + 4x^2 = 7x^2 because I had 3 x^2 and I added another 4 of them.

Answer 19

Are you thinking? Are you trying? Do you want to learn, or are you hoping someone will tell you the answer?

Answer 20

no i'm thinking i just suck at math all together..

Answer 21

it's fine i'll just guess that i'm right

Answer 22

No patience, eh?

Answer 23

i have patience i just don't like being accused of cheating when i'm trying @SmoothMath

Answer 24

I'm not trying to accuse you. I'm just trying to figure out if explaining a concept to you is a good use of time. Teaching is cooperative.

Answer 25

When I give an explanation and your response is unrelated to what I've said, not a question or anything, I'm tempted to go help someone else.

Answer 26

back, @Savannahhhh143 do u understand wat SmoothMath is saying? if not im very gud at explaining.

Answer 27

Yeah. He's really "gud."

Answer 28

this isnt english class so dont hate on my text language :P

Answer 29

My bad.