Answer:
[tex]p = 8[/tex]
Step-by-step explanation:
1) Divide both sides by 2.
[tex]p + 1 = \frac{18}{2} [/tex]
2) Simplify 18/2 to 9.
[tex]p + 1 = 9[/tex]
3) Subtract 1 from both sides.
[tex]p = 9 - 1[/tex]
4) Simplify 9 - 1 to 8.
[tex]p = 8[/tex]
Therefor, the answer is option A.