Solve this below. 4(3y+7)=40

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.

Which of the following points is collinear with (-2,1) and (0,3)

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?