The prime factorization of a number is 3^2x5^3x7. which statement is true about the factors of the number? ? twenty-one is a factor of the number because both 3 and 7 are prime factors. twenty-one is not a factor of the number because 21 is not prime. ninety is a factor of the number because 3^2=9 and 90 is divisible by 9. ninety is not a factor of the number because 90 is not divisible by 7.

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

What is the first step of an indirect proof of a number that is divisible by two

What are “like terms”? why can we only add like terms?