The science club went on a two-day field trip. the first day the members paid $60 for transportation plus $15 per ticket to the planetarium. the second day they paid $95 for transportation plus $12 per ticket to the geology museum. write an expression to represent the total cost for two days for the n members of the club.

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z