Can someone please help me with this question? It's so tricky

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

What is the solution to the equation 9^(x+1) =27

Plzzzz i beg u asap ! what is the equation of this graphed line? enter your answer in slope-intercept form in the box.