Someone i really need this answer anyone don’t guessyou

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

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25