Addison and Alexa find ½ + ⅙. Addison says the sum is 4/6. Alexa says the sum is ⅔. Who is correct? Explain your reasoning.

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

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.