Simplify.i11
A. 1
B. i
C. -1
D. -i
Answer: D
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Solve the problem.Evaluate (x + 4y)2 for x = 4; and y = 4
A. 20 B. 40 C. 64 D. 400
Solve the problem.The number of bacteria growing in an incubation culture increases with time according to 
where x is time in days. Find the number of bacteria when 
and 
.
A. 6800 bacteria; 81,600 bacteria B. 6800 bacteria; 550,800 bacteria C. 20,400 bacteria; 550,800 bacteria D. 6800 bacteria; 183,600 bacteria
Fill in the blank with one of the words or phrases listed below. 
A(n) 
is a piece of a line with two endpoints.
A. transversal B. ray C. perimeter D. line segment
Solve the problem.A force of 5 pounds acts in the direction of 10° to the horizontal. The force moves an object along a straight line from the point (10, 3) to the point (15, 12), with distance measured in feet. Find the work done by the force. Round the answer to one decimal place, if necessary.
A. 10.1 ft-lb B. 68.9 ft-lb C. 51.5 ft-lb D. 50.7 ft-lb