Please answer this question now

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

Pls! does anybody know a shortcut for answering these types of questions in the future?

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis