Solving zero and negative exponents: 3/3^-4 (3 over 3 with an exponent of negative 4)

Which operation should be performed first according to the order of operations? 44 • 2 – [(5 + 20 • 3) – 12] + 16 ÷ 2 5 + 20 20 • 3 16 ÷ 2 44 • 2

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]