HELP PLEASE What is the exact solution to the equation e^2x+1=7?

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

The graph of fx shown below has the same shape as the graph of gx = 3x^2 but is shifted down 2 units

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.