What’s is the solution to the following equation

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

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost