Answer and explain I’ll mark brainliest

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.

What is the standard form of -5x^2+2x^4-11+x^3+3x

Acircle has a circumference of 7.850 units. what is its radius?