Nikki and Dave both work as cleaners. The equation shown models the total amount, n, in dollars that Nikki charges to clean carpets in r rooms. n=20r. The table shows the total amount, d, in dollars that Dave charges to clean windows in r rooms. He charges the same amount per room to clean windows. Complete the table to show the amount that each person charges to clean r rooms.​

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !