What are the zeros of the function f(x) = x2 + 8x +4, expressed in simplest radical form?
x=4+2/3
x=4+48
x= -8373
2
x= -40473
2

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

17 in long 1.3 ft wide and 8in high what is the volume