If n=300 and (p-hat) =0.64, find the margin of error at a 95% confidence level

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]