Lost

Attention This is your captain speaking. We’ve had an electrical failure and need to make an

emergency landing.

Please remain calm and in your seat until the plane comes to a complete halt.

Please gather your items and calmly exit through the emergency door behind the toilet.

The electrical failure has reset the passwords locking the overhead bins and closet. We apologize for any inconvenience.

{4x, 7xxx, 23, y, 20x, 11xy, 7xy, 3x, 2y, 57y, 8, xxx, 11, 2xy, 4xxx}

This is your captain speaking:

To open the overhead bins and closets you will need to use three like terms from this set of math terms.

Your friend Jackie turns to you: I think we should write these math terms down so we don’t forget them.

Ty tugs on an overhead bin: How do these passwords work?

Ilannaq: Each math term can only be used once. If the first 3 like terms don’t open the doc, close the doc and retry the terms in a different order. Don’t use spaces between the terms.

x x2 x3

y y2 xy xy xy

Charlie: I don’t get it.

Ilannaq: It’s like this. 23, 8, 11 are all like terms, constants without variables.

I’m guessing they open the closet. And the terms with variables match the x, y or xy on our seat numbers.

If that doesn’t work I’ll try 23118.

So first I’m going to try 11823.

Ok, says Charlie, Now I get it.

Ty: Did we find everything?

Jackie: Well, there are 5 of us, so we should have 5 things, including Rolo’s

raincoat.

Charlie: We don’t have everything. We need to keep looking.

Ty: I count 5. Let’s get off this plane.

You’ve just stepped on

You need to go back to the plane and search for anti sting cream.

Hey! A tower. Maybe we can find help there. It looks like a long walk.

Ty: Let’s go through the luggage the captain dumped on the beach to get more supplies before we go.

Jackie: Agreed.

Click on the equivalent expression to unlock the luggage.

3x – (2 + x)4x - 2

-2 + 2x

5x + 2

Nope!

Jackie: That’s climbing rope. I just bought it in Juneau for my big sister.

Click on the equivalent expression to unlock the luggage.

x – 3 – 2y

-x + y – 3 - y 3 – x + 2y

-3 + x - 2y

-3 - x

Nope!

Ilannaq: My supersized leak-proof drop cloth. I promised my gram, I’d get the biggest I could find.

Click on the equivalent expression to unlock the luggage.

y + 3xy + 5x

11x

3xy + 9x - y

11xy

7x + 3xy + 2x - y

Nope!

Charlie: Twiglets - my dad special orders them from England. It was cheaper to ship them to Juneau than Nome.

This mug might be useful too!

Click on the equivalent expression to unlock the luggage.

30(1 + 3x)

10(3 + 11x)

30 + 110x

50 +100x – 20 – 10x

Nope!

Ty: I think we ought to take my sharpies to leave messages in case someone comes to the island looking for us. And my notebook.

Ilannaq: Now into the jungle.

Ty: After you.

Hey look! A bottle with a message in it.

We may want to try another direction.

We might not want to go this way.

We did it! We found the tower and it’s a cell phone tower! Let’s call home and get out of here.

Game Over

E) 7x + 0 = 49

N) 16 – x = 8

W) x - 3 = 0

S) 6x = 36

W) 2(1+ x) = 14

N) x(3 + 4) = 49

E) x – 12 = -32

N) 4(x + 1) = 20

E) 10(3x – 2x) = 30

S) 2 + 4x = 10

E) 25x = 125

S) 5(5 + x) = 30

E) 3(x - 3) = 3

The way to the Tower