Caroline and Ellie go to the movie theater and purchase refreshments for their friends.

Caroline spends a total of $141.75 on 14 drinks and 3 bags of popcorn.

Ellie spends a total of $84.00 on 7 drinks and 9 bags of popcorn.

Write a system of equations that can be used to find the price of one drink and the price of one bag of popcorn.

Using these equations, determine and state the price of a drink, to the nearest cent.

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

State if the two triangles are congruent. if they are, state how you know?

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