1. Find in which case a and b vary directly: a 5 (a 8 11 14 15 16 b b 20 32 33 56 60 80 please help me

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Laura read 1/8 of a comic book in 2 days. she reads the same number of pages every day. what part of the book does she read in a week

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.