The half-life of a certain radioactive material is 78 hours. an initial amount of the material has a mass of 790 kg. write an exponential function that models the decay of this material. find how much radioactive material remains after 18 hours. round your answer to the nearest thousandth.
a. y = 1/2 (1/790)^1/7 8x ; 0.107kg
b. y = 790 1/2 to 78x ; 0 kg
c. y = 22 (1/790) to the 1/78x ; 0.429 kg
d. y = 790 1/2 to the 1/78x ; 673.233 kg
i am not sure how to solve this problem, so an explanation would be incredibly !
you!

step-by-step explanation:

the options are kind of confusing. i can tell you what i see going on here when i look at the graph.

the class and exam medians are closely related, and it looks like the low outlier on the exam did pull the median lower. [tex][/tex]

damm bro the struggle

step-by-step explanation:

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2