1. How many terms are there in an arithmetic sequence if the common difference is 7, first
term is -12, and the last term is 72?
A. 11
B. 12
C. 13
D. 14
2. What is the arithmetic mean of 16 and -12?
A.-2
B.-14
c. 2
D. 14
3. What is the fourth term of the arithmetic sequence if three arithmetic means are inserted
between 5 and 29?
A. 11
B. 17
C. 23
D. 35
4. What is the sum of all the odd integers between 8 and 20?
A. 75
B. 79
C. 84
D.85
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