Answer:
A. 2(x + 9) = 8
Step-by-step explanation:
To solve this problem, we proceed as follows:
- We call "x" the number picked up by Amy:
[tex]x[/tex]
- Amy then adds 9 to this number, so we get:
[tex]x+9[/tex]
- Then, we multiply this sum by 2, so we get:
[tex]2(x+9)[/tex]
- Finally, Amy says that this number is equal to 8:
[tex]2(x+9)=8[/tex]
So the correct equation is
A. 2(x + 9) = 8
We can even solve it to find the number. We get:
[tex]2(x+9)=8\\2x+2\cdot 9 = 8\\2x+18=8\\2x+18-18=8-18\\2x=-10\\x=\frac{-10}{2}=-5[/tex]
