Look for a pattern and then predict the general term, or nth term, an, of the sequence.3, 12, 21, 30, 39, . . .
A. an = 3(9)n-1
B. an = 6n - 9
C. an = 9n - 2
D. an = 3(3n - 2)
Answer: D
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Perform the indicated operation, being careful not to leave more than 59 seconds or 59 minutes in your answers.
A. 13 hours, 37 minutes, 26 seconds B. 6 hours, 17 minutes, 32 seconds C. 6 hours, 18 minutes, 32 seconds D. 6 hours, 17 minutes, 28 seconds
A reflector for a satellite dish is parabolic in cross section, with the receiver at the focus F. The reflector is 1 ft deep and 30 ft wide from rim to rim (see the figure). How far is the receiver from the vertex of the parabolic reflector? 
?
Round to the nearest foot, if necessary.
?
?
A. 59 ft
B. 51 ft
C. 56 ft
D. 53 ft
E. 52 ft
Solve the problem.A person puts $30 into a bank account on January 1, $35 on February 1, $40 on March 1, and so forth. How much has the person put into the bank account by December 30?
A. $690 B. $1380 C. $720 D. $510
Sal Travato invested $2000 in a corporate retirement account that pays 5% annual interest compounded semiannually. Find the value of his investment after 10 years. Round your answer to the nearest cent.
A) $3277.23 B) $50.00 C) $2560.17 D) $2621.79 E) $2050.00