Answer:
7k^6
Step-by-step explanation:
Answer:
2x + 8
Step-by-step explanation:
Don't worry, this is simple! Add up the common terms.
For example, you can't add up 2x and 5, because 2 is being multiplied by a variable.
So combine the x terms: 2x
And the numerical terms: 8
Combine 2x and positive 8.
2x + 8
It's C.
All the other options are a 3 to 1 ratio, except for C.
<u>Case 1 :</u>
5 positive x-tiles = 5x
1 positive unit tile = 1
5 positive x-tiles and 1 positive unit tile = 5x + 1
<u>Case 2 :</u>
2 negative x-tiles = -2x
6 positive unit tiles = 6
so, 2 negative x-tiles and 6 positive unit tiles = -2x+6
We see that Gracia has represented the 1st case as 5x+(-1), which should be 5 positive x-tiles and 1 negative unit tile.
Hence the statement : 5 positive x-tiles and 1 positive unit tile to represent 5x+(-1) , explains Gracia's error.
