Solve the problem.A person learning certain skills involving repetition tends to learn quickly at first and then learning tapers off and approaches some upper limit. Suppose the number of symbols per minute that a computer operator can produce is given by 
, where t is the number of months the operator has been in training. Find the number of symbols after 6 months of training.
A. 9370 symbols
B. 227 symbols
C. 1 symbols
D. 5120 symbols
Answer: B
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Factor completely.x7 + 7x6 + 10x5
A. x5(x - 5)(x + 2) B. x5(x + 5)(x - 2) C. x5(x + 5)(x + 2) D. x5(x2 + 7x + 10)
Find the intersection. x = -3 + 9t, y = -3 + 8t, z = -2 + 9t ; 8x + 9y + 8z = -4
A. 
B. (-12, -11, -11)
C. (6, 5, 7)
D. 
Using the table, set up proportions to solve.The table shows a scale for the cost of sending printed matter to different countries using the services of an undisclosed courier.
To which country does it cost the least to send a 3.8 lb package?
A. Other countries B. Mexico C. Canada
Solve.The pitch of a screw is the distance between threads. With each complete rotation of the screw, it goes in or out a distance equal to its pitch. How far will a screw with a pitch of 
in. go into a piece of wood when it is turned 10 complete rotations clockwise?
A. 
in.
B. 
in.
C. 
in.
D. 
in.