Solve the problem.A plane flying a straight course observes a mountain at a bearing of 33.4° 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 43.4°. How far is the plane from the mountain when the second bearing is taken (to the nearest tenth of a km)?
A. 4.8 km
B. 3.2 km
C. 7.5 km
D. 8.3 km
Answer: A
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The formula that approximates the annual interest rate of a monthly installment loan is given by:
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where N is the total number of payments, M is the monthly payment, and P is the amount financed. Simplify the expression for the annual interest rate r, and then approximate the annual interest rate for a five-year car loan of $28,000 that has monthly payments of $600. (Round your answer to two decimal places.)
?
A. 
B. ?
C. ?
D. ?
E. ?
If 
, calculate the value of 
.
?
A. 0.64 B. 1.00 C. 1.76 D. 4.07
Solve the problem.The graph shows the total sales for each month for two years. 
MonthWhat were the total sales for the first 6 months of 2010?
A. $390,000 B. $298,000 C. $366,000 D. $290,000
Solve, finding all solutions in [0, 2?).2 sin x cos x + cos x = 0
A. 
, 
, 
, 
B. 
, 
, 
, 1
C. No solution
D. 
, 
, 
, 