What is the 22nd term of the arithmetic sequence where a = 8 and a9 = 56? (6 points) O 134
Ο 142
Ο Ο Ο Ο

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Which one is the correct answer, and why?

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?