the half life of a substance is the amount of time it takes for half of the atoms in a sample of the substance to decay. the half life of cobalt-60 is 5.26 years. if Joan has a 100-gram sample, which graph best represents how much cobalt-60 will be left after 30 years?

If (17, 4) is an ordered pair of the inverse of f(x), which of the following is an ordered pair of the function f(x)? a. (17,4) b. (4.17) c. (4,0) d. 0,17)

How do your peer relationships affect your overall health status? what can you do to improve your peer relationships?

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?