How many solutions does the following equation have?
3(x+5)=-4x+83(x+5)=−4x+8

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

What is the value of x when x + 7 = 21?

Determine if the equation defines y as a function of x: 2xy = 1. yes o no