Which property is used below 4xy^2 =8y^2 and 8y^2=72, then 4xy^2=72. a)reflexive property. b) substitution property. c) symmetric property. d) transitive property

Seattle, washington is known for being rainy. one day last month, 8 inches of rain fell in 1 1/2 hours. what us the rate of the rainfall expressed in ft per plzzz write a proportion i will give you 100 points