A small company produces baseball and racquetball products. The profit made from the baseball products can be represented by the function B(x) = -6x2 + 2,556x - 106,878. The profit made from the racquetball products can be represented by the function R(x) = -12 + 293x - 16,770. If x is the total number of products made, which function best describes Ax), the profit the company makes from these two products?

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.