In the math club, 7 of the 20 girls are seniors, and 4 of the 14 boys are seniors. what is the probability of randomly selecting a boy or a senior to represent the math club at a statewide math contest?

What is the least common multiple of 16 and 3?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

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