Which is a zero of the quadratic function f(x) = 16x2 + 32x - 9?

What numbers are included in the set of integers? what numbers are not included?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)