Find −a2 − 3b3 + c2 + 2b3 − c2 if a = 3, b = 2, and c = −3 the numbers after the variables are exponents. so it's like -a2 is -a squared.

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

How can you construct perpendicular lines and prove theorems about perpendicular lines

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.