Use the following function rule to find f (3).
f (x) = -5(2) ^x
f (3)=

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.

Find x to the nearest hundredth place

Ineed with number 6 , explain how to get 1978