The function f(h)=m(1/2)^h gives the mass, m, of a radioactive substance remaining after h half-lives. iron has a half-life of 2.7 years. which equation gives the mass of a 200 mg iron sample remaining after y years, and approximately how many milligrams remain after 12 years? a) f(x) = 2.7(0.5)200; 1.7 mgb) f(x) = 200(0.5)12; 30.8 mgc )f(x) = 200(0.5)12; 30.8 mgd) f(x) = 200(0.185)12; 3.2 mg  e)f(x) = 200(0.774)12; 9.2 mg

Which matrix multiplication is possible?

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.