SOLUTION: Please help me solve this problem: Find g(a+1) when g(x)=2x+1.

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Question 886707: Please help me solve this problem: Find g(a+1) when g(x)=2x+1.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
To find g%28a%2B1%29, we just plug in x+=+a%2B1. That means you replace EVERY copy of x with 'a+1' and simplify.


g%28x%29=2x%2B1 Start with the given function

g%28x%29=2%28x%29%2B1 This step is optional, but it helps to have every 'x' on the right side in parenthesis.

g%28a%2B1%29=2%28a%2B1%29%2B1 Everywhere you see an x, replace it with a%2B1

g%28a%2B1%29=2a%2B2%2A1%2B1 Distribute

g%28a%2B1%29=2a%2B2%2B1 Multiply

g%28a%2B1%29=2a%2B3 Combine like terms.


And we're done. The final answer is g%28a%2B1%29=2a%2B3