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If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b