Find the indicated term of the geometric sequence.a5 when a1 = 9 and r = - 
.
A. 
B. 
C. - 
D. - 
Answer: A
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Factor by grouping.42m - 7m2 + 18n - 3nm
A. No common factor B. (7m + 3n)(6 - m) C. m(7 + 3n)(6 - 1) D. (7m - 3n)(6 - m)
Solve the problem.The energy E (in J) dissipated by a certain resistor after t seconds is given by 
At what time is the energy dissipated the greatest?
A. 10 sec B. 12 sec C. 9 sec D. 11 sec
Solve the problem that involves probabilities with independent events.In one town, 25% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that they are both Democrats. Round to the nearest thousandth.
A. 0.250 B. 0.060 C. 0.063 D. 0.500
Find a formula for the nth term of the arithmetic sequence whose first term a and common difference d are given.a = 
, d = 
A. an = 
n + 
B. an = 
n + 
C. an = 
n + 
D. an = 
n - 