(2x + 6y = -28
(x+3y=-14
you
how do u solve this

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.

In which form is the following function written? y = - 2(x – 3)(x + 5)

What expression is equivalent to (84+16)