A direct variation includes the points (-4, -16) and (-3, n). Find n. Write and solve a direct variation equation to find the answer.

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

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?