Hi! Do any of you know the answer to this question? I’m struggling and I’m terrible at geometry. Plz help, thank you!

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

What is the value of p in the equation y^ = -4x?

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.