Utilizando a fórmula da soma dos n termos de uma P. A. determine a soma dos 5 primeiros termos
da PA(2, 8, 14, ...)

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

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.

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.