(2+√3)-(2-√3)=OPTIONS:A.)4 B.)2(2+√3) C.)(2-√3) D.)2√3

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

Look at attachment. has all info needed. need

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.