I NEED HELP WITH MATH please I’ll give 48 points please help me

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Find the solution of each of the following.

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is