Solve the problem.A cancer patient undergoing chemotherapy is injected with a particular drug. The function 
gives the number of milligrams D of this drug that is in the patient's bloodstream h hours after the drug has been administered. How many milligrams of the drug were injected? To the nearest milligram, how much of the drug will be present after 2 hours?
Fill in the blank(s) with the appropriate word(s).
4 mg; 2 mg
Mathematics
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Locate the fraction on the number line.
A.
B.
C.
D.
Mathematics
Graph the solution region for the system of inequalities and identify the corners of the region.
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality graphically. Express the solution in set-builder notation.
< - 4
A. {
x > 28}
B. {
x < - 4}
C. {
x > - 2}
D. {
x > 14}
Mathematics
Choose the correct response.What is the speed of a plane that travels at a rate of 567 mph into a wind of r mph?
A. 567 + r mph
B. 
mph
C. 567 - r mph
D. r - 567 mph
Mathematics