20 POINTS IF YOU DO THIS AND ONE MORE. 10 ON ONE AND 10 ON THE OTHER A book sold 35,600 copies in its first month of release. Suppose this represents 8.7% of the number of copies sold to date. How many copies have been sold to date?
Round your answer to the nearest whole number.

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 center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).