Tim had 2b books for sale at a price of k dollars each. if y is the number of books he did not sell, which of the following represents the total dollar amount he received in sales from the books?

a. k(2b-y)
b. k(y-2b)
c. ky - 2b
d. 2b - ky
e. 2bk - y

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

Define the type of sequence below. -2,0,2,4,6 a. both arithmetic and geometric b. arithmetic c. neither arithmetic nor geometric d. geometric

Write a function rule for  “the output is  5 less than the input.” let  x be the input and let  y  be the output.