Solve the equation.
- 
= 0
A. 
B. 
C. 
D. 
Answer: D
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Solve.In the land of Taxalot, the function T(x) = 0.21(x - 8400) + 770 represents the tax bill T of a single person whose adjusted gross income is x dollars for incomes between 8400 and 27,500 inclusive. What is a single filer's tax bill if adjusted gross income is $20,100?
A. $2619 B. $4991 C. $2457 D. $3227
After beginning antiseptic treatment, the number of bacteria in a population decreases at a rate of 10% per hour, that is, dN/dt = -0.10N, where N is the number of bacteria and t is the time, in hours.
a) When t = 0 , there are 80,000 bacteria present. Find a function that satisfies this equation. (b) How many bacteria will remain after 24 hr? (c) After how long do half of the original bacteria remain?
Perform the indicated operations and simplify the result so there are no quotients.
+ 
A. sin ? tan ? B. sec ? csc ? C. 1 + cot ? D. -2 tan2?
Determine the viewing window used. 
A. 
B. 
C. 
D. 