TRIANGLES Dylan drew n dots on a piece of paper making sure that no set of 3 points were collinear. the triangles that can be made using dots as vertical is equal to f(n)=1/6(n^3-3n^2+2n), when n≥0. A. if Dylan drew 15 dots, how many triangles can be made? B. Sketch a graph of the function

Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.