50 POINTS HURRY will give brainliest

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

To decrease an amount by 16% what single multiplier would you use

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.