Find the intervals on which the function is continuous.y = 
- 5x
A. discontinuous only when x = -5
B. discontinuous only when x = 5
C. continuous everywhere
D. discontinuous only when x = -10
Answer: A
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Use identities to find the indicated value for each angle measure.cos 2? = 
and ? terminates in quadrant III
Find cos ?.
A. cos ? = - 
B. cos ? = - 
C. cos ? = 0
D. cos ? = 
Solve the problem.The function 
can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams (to two decimals) will be present after 
A. 0.45 mg B. 651.61 mg C. 0.1 mg D. 4.95 mg
Find the nth term an of the geometric sequence.-4, -8, -16, -32, -64, . . .
A. an = (-4)(2)n-1 B. an = a1 + 2n C. an = (-4)(2)n D. an = (-4)(2n)
Rewrite the given product as a factorial.1 ? 2 ? 3 ? ? ? ? ? 19
A. 18! B. 19! C. 17! D. 20!