Mrs. Huang found the mean and mean absolute deviation (MAD) of the latest test scores for two of her classes. Class A had a mean of 73.5 and Class B had a mean of 82.4. Both classes had a MAD about 4. What it the difference of the means as a multiple of the MAD? Round your answer to two decimal places. The difference of the means is about times the MAD.

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