please answer question 3 and 4

Question 2 Revenue and Elasticity The price-demand equation for hamburgers at Yaster's Burgers is x+ 384 p = 2,927, where p is the price of a hamburger in dollars and is the number of hamburgers demanded at that price. Use this information to answer questions 2-4 below. What price will maximize the revenue for Yaster's? Round to the nearest cent. $ LA 2.5 pts per hamburger Question 3 Use the Revenue and Elasticity information above to answer this question. 2.5 pts If the current price of a hamburger at Yaster's Burgers is $3.21, will a 5% price increase cause revenue to 1. increase or 2. decrease? Enter 1 or 2. Question 4 Use the Revenue and Elasticity information above to answer this question. 2.5 pts If the current price of a hamburger at Yaster's Burgers is $4.29, will a 7% price increase cause revenue to 1. increase or 2. decrease? Enter 1 or 2