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22. In an arithmetic sequence, a = 42 and a,, = 117. What is a? (77) 23. Matt's average score on the first 7
22. In an arithmetic sequence, a = 42 and a,, = 117. What is a? (77) 23. Matt's average score on the first 7 tests of his Pre-Calculus course was 90. If he makes a 100 on the 3) test, what will his new test average be? 95
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