Iwant an answer for number 25,24,23

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.

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

F(x)=5/6x+3 which of the following is true