Graph the given parabola.y = -x2 - 4x
A. 
B. 
C. 
D. 
Answer: D
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = (5 - 2t)i + (9 + 9t)j + (6t - 6)k, -10 ? t ? 9
A. 2299 B. -11 C. -121 D. 209
Write the decimal in word form.The distance from John's house to Ted's is 0.7 mile.
A. seven thousandths B. seven hundredths C. seven tenths D. seven ten-thousandths
Write the equation for the shape described.The left semicircle centered at (0, 0) with radius 4
A. x = 
B. x = -
C. x = -
D. x = 
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. 5: 30 P.M B. 3:45 P.M C. 12:30 P.M D. 5:45 P.M