Add or subtract as indicated.- 
+ 
A. - 
B. - 1
C. - 
D. - 
Answer: C
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Express the number in scientific notation.870,000
A. 8.7 × 105 B. 8.7 × 104 C. 8.7 × 10-4 D. 8.7 × 10-5
Find principal to the nearest dollar, rate to the nearest tenth of a percent, or time to the nearest day. Use banker's interest.House of Realty earned 
interest on a $18,000 deposit in an account paying 4%. Find the number of days that the funds were on deposit.
A. 315 days B. 213 days C. 210 days D. 58 days
Answer the question.Choose the expression that is equivalent to the following: 7 - 7
A. (-2)(7) B. 2(7) C. 7 + (-7) D. (7)(7)
Find the common difference d and the nth term an of the arithmetic sequence with the specified terms. 4th term is 16; 6th term is 32
A. d = 0; an = 0n + 8 B. d = 8; an = 8n - 16 C. d = 8; an = 8n + 16 D. d = 8; an = 8n - 8