Will give 15 points. Select all of the equations that will produce exponential decay. y = 1/2 (5)^x
y = (2)^x
y = (0.1)^x
y = 3(0.4)^x
y = 2( 1/4 )^x
y = (3)^x

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?