Sam conducted a survey at lunchtime to find the number of hours that students spent studying for the science test. He asked 15 different students how much time they spent studying. Sam drew a line plot of the data. His plot has a spread of 2.25 and peaks at 1.75 hours. Which graph line plot did Sam draw?

Which is the graph of the function y=2(4)^x

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

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?