Please help!! The function below contains ordered pairs of the form (x, y)

F = (6,8), (-4,3), (5,1)

What is the domain of the function?

A) { -4, 1, 3, 5, 6, 8 }
B) { 1, 3, 9 }
C) { -4, 5, 5 }
D) { 5, 6 }​

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

Find the solution of this system of equation -7x+y=-20 9x-3y=36

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.