The answer is 19.. substitute -1 into the function whenever you see x put -1 there. This implies that 3+16 =19
For number three they are all equal
Answer:
$118.43
Step-by-step explanation:
The price on Monday ($126.38), less the decrease ($7.95), results in the price on Tuesday:
$126.38
- 7.95
----------------
$ 118.43
I did it but it's a long number
First things first, write out your equation without the substitution.
2x+ 2y= 10
Now, put in the substitution.
2x+ 2• 2= 10
Combine like terms.
2x+ 4= 10
Now that your equation it simplified, you need to reverse the problem and put everything on the other side.
2x+ 4= 10
- 4 - 4
2x = 6
2x=6
— —
2 2
X= 3
So the final answer is x=3