Determine whether the two pairs of numbers are proportional.2.5, 3.8 and 4.5, 6.3
A. No
B. Yes
Answer: A
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Evaluate the function.Find f(0) when f(x) = x2 + 5x - 4
A. -4 B. 0 C. 4 D. 16
Perform the indicated operation and express the answer in decimal notation.(1.2 × 107)(7 × 10-4)
A. 8400 B. 8.4 C. 84 D. 840
Solve the problem.The amount of a certain drug in the bloodstream is modeled by the function 
, where y0 is the amount of the drug injected (in milligrams) and t is the elapsed time (in hours). Suppose that 10 milligrams are injected at 10:00 A.M. If a second injection is to be administered when there is 1 milligram of the drug present in the bloodstream, approximately when should the next dose be given? Express your answer to the nearest quarter hour.
A. 12:30 P.M B. 5: 30 P.M C. 5:45 P.M D. 3:45 P.M
Find all solutions to the equation. Express each result in radians.sin 4x = 
A. 
+ 
, 
+ 
B. 
+ n?, 
+ n?
C. 
+ n?, 
+ n?
D. 
+ 
, 
+ 