Select the equation that best represents this graph. A y = cos(3x) B y = -3 sin(x) Cy=-sin(3x) D y = cos X - 3 оа A ob B С C Od​

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.