Convert a salary of 36000 per year to earnings per week. Please help preferably fast since I'm doing a test

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

A. s.a.! this is a similarity in right triangles. next (solve for x)a.) 12b.) 5c.) 12.5d.) [tex] 6\sqrt{3} [/tex]

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]