Does this graph represent a function? Why or why not?

A. No, because it fails the vertical line test.
B. No, because it is not a straight line.
C. Yes, because it passes the vertical line test.

D. Yes, because it passes the horizontal line test.

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.

20 points plus brainliest andwer plus my hover hoard im v desperate ! evaluate the polynomial for x=-2 in the equation -3x^3+7x^2-7x-1 (simplify your answer)

Find the value of the combination. 5 c 5