Which function represents the sequence that represents the pattern? Group of answer choices

an = an-1 + 3

an = an-1 - 3

an = 3an-1 - 3

an = 3an-1 + 3

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0

Find the perimeter of each of the two noncongruent triangles where a = 15, b = 20, and a = 29°

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?