Review the table of values for function f(x). x f(x)
-2 8
-1 5 (1/2)
-1/2 4
0 1/2
1/2 -1
1 -2
2 -7

Which number is the value of f–1(–2)?
A. –8
B. –7
C. 1/8
D. 1

Write as a product of two polynomials. 2(3–b)+5(b–3)^2

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

Concerned about campus safety, college officials want to estimate the percentage of students who carry a gun, knife, or other such weapon. how many randomly selected students must be surveyed in order to be 95 % confident that the sample percentage has a margin of error of two percentage points?