Which equation has (2, -1) as a solution? a. y = 2x - 1 b. y = x + 3 c. y = x - 3 d. y = -2x + 1 if someone could explain this to me it would be greatly appreciated. you.

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?

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.