Let k be any integer with k 1, and suppose that P(k) is true. What is the left-hand side of P(k)? 1 + (5k 4) 1 + 6 + 11 + 16 1 + 6 + 11 + 16 + + (5k 4) 1 + 6 + 11 + 16 + + (5n 4) What is the right-hand side of P(k)? (Enter a mathematical expression.) [The inductive hypothesis states that the two sides of P(k) are equal.] We must show that P(k + 1) is true. P(k + 1) is the following equation. (Enter a mathematical expression.) 1 + 6 + 11 + 16 + + (5(k + 1) 4) =