Determine if the statement is a proportion.I. 
II. 
A. I is a proportion, II is not a proportion.
B. I is not a proportion, II is a proportion.
C. I and II are both proportions.
D. Neither I nor II are proportions.
Answer: D
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Solve the problem.The concentration c (in mg/L) of a certain drug in the bloodstream is found to be 
where t is time (in h) after the drug is taken. Find dc/dt.
A. 
B. 
C. 
D. 
Identify the coefficient of the fourth term for the expression
List all the factors of the number.19
A. 1, 19 B. 1 C. 19 D. no factors
Solve the problem.The maximum weight for an elevator is 1600 pounds. You need to move boxes each weighing 40 pounds, and you weigh 155 pounds. Write an inequality that can be used to determine the maximum number of boxes that you can place in the elevator at one time. Assume only you and the boxes are in the elevator.
A. 1600 - 155 ? 40n B. 1600 + 155 ? 40n C. 155 + 40n ? 1600 D. 155 + 40n ? 1600