Solve the problem.In a geometric series, a2 = -24 and a5 = 1536; find r and a1.
What will be an ideal response?
a1 = 6; r = -4
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Solve the problem.A plane flying a straight course observes a mountain at a bearing of 30.1° to the right of its course. At that time the plane is 
from the mountain. A short time later, the bearing to the mountain becomes 40.1°. How far is the plane from the mountain when the second bearing is taken (to the nearest tenth of a km)?
A. 14.6 km B. 7.8 km C. 5.2 km D. 12.8 km
Solve the problem. Round to the nearest cent.Central Airlines offers a trade discount series of 30/25/5 for frequent flyers. If a round-trip airline ticket is $697, use the single discount equivalent to calculate the trade discount of a round-trip ticket.
A. $349.37 B. $278.80 C. $347.63 D. $418.20
A dart is thrown randomly and sticks on the circular dart board shown. Find the requested probability. Assume that all sectors are the same size and that the dart does not land on a border between shaded areas. 
Find the probability that the dart lands on an odd number.
A. 
B. 
C. 
D. 1
Factor the expression completely, if possible.x4 - 81
A. (x2 - 9)(x + 3)(x - 3) B. (x2 + 9)(x + 3)(x - 3) C. (x + 3)2(x - 3)2 D. Does not factor