Find the common difference of the arithmetic sequence -11, -16, -21,...

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Someone answer this check out the image!