Solve the problem.A boat travels d miles against the current whose rate is 7 mph. On the return trip, the boat travels with the same current. The expression 
+ 
, where r is the speed of the boat in calm water, represents the total amount of time in hours it takes for the entire trip. Represent this amount of time as a single rational expression.
A. 
B. 
C. 
D. 
Answer: D
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Solve triangle ABC. If necessary, round the answer to the nearest tenth.B = 38.4°, C = 101.6°, b = 25.92 meters
A. A = 38°, a = 40.9 m, c = 26.8 m B. A = 40°, a = 26.8 m, c = 40.9 m C. A = 38°, a = 42.9 m, c = 28.8 m D. A = 40°, a = 28.8 m, c = 42.9 m
Find the reciprocal.
A. 
has no reciprocal.
B. 
C. 4
D. -4
Factor the polynomial completely using the trial and error method.10x2 + 17x - 20
A. (5x + 4)(2x - 5) B. (x - 4)(10x + 5) C. (2x - 4)(5x + 5) D. (5x - 4)(2x + 5)
The net investment flow (rate of capital formation) of the giant conglomerate LTF incorporated is projected to be
?
?
million dollars/year in year t. Find the accruement on the company's capital stock in the eight year.
?
Hint: The amount is given by
?
?
?
A. $40.53 million
B. $41.85 million
C. $40.74 million
D. $38.41 million