k(3) = 2(3)2 = 12 , however if the 2 after the n means "squared" then it is 2(3)^2 = 2(9) = 18

5. w(7) for the function w(x) = 5x + 2

w(7) = 5(7) + 2 = 35 + 2 = 37

Answers are highlighted. For k(3) for k(n) = 2n2, I wasn't sure of the 2 after the n mean 2 * n * 2 or 2 * n^2 where ^ means (to the power). I did it both ways just in case.