12. An indoor tennis facility charges $22 per hour to use a tennis court. The local athletic club also has tennis courts that can only be rented by their members. A monthly membership is $60. With the
membership, the tennis court rental fee is $7 an hour. How many times during one month does it take
for the membership to the athletic club to be beneficial? Set up an expression to model each
option. Show all work.

An animal shelter has 21 puppies. if the puppies are 28% of the total dogs and cat population how many dogs and cats are in the animal shelter

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Simply 8x squared + 5(7x squared- x) - 2x =