3. The first two terms of an arithmetic sequence are 7 and 11. Which of the following is the value of its 30th
term?
(1) 123
(3) 214
(2) 127
(4) 221

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)