What is the value of 2x+3 if x=1

What does it mean by solve the exponential equation for x?

Me with this one question, and i'll upvote the brainliest answer

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.