Solve the problem.Find the tangent line(s) at the pole for the curve 
A. ? = 
(y = 
x), ? = 
(y = - 
x)
B. ? = 
(y = - 
x), ? = 
(y = 
x)
C. ? = 
(y = 
x), ? = 
(y = - 
x)
D. ? = 0 (y = 0), ? = 
(x = 0)
Answer: B
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Provide an appropriate response.A certain drug is eliminated from the bloodstream exponentially with a half-life of 12 hours. Suppose that a patient receives an initial dose of 25 milligrams of the drug at midnight. Estimate when the drug concentration will reach 20% of its initial level.
A. 40 hours B. 16 hours C. 58 hours D. 28 hours
Find the requested function value for the given function. Round the answer to the nearest tenth when necessary.If f(x) = 
, find the value of f(39).
A. 8.8 B. 78 C. 9 D. 81
We have $17.97 to spend on fruit. Apples cost $0.37 each, and oranges cost $0.73 each. We need a total of 33 pieces of fruit. ? A: Using ?A for number of apples and ?O for number of oranges, write a system of two equations that determine our fruit purchase. Round your answers to two decimal places, if necessary. ? B: How many apples and how many oranges do we buy?
What will be an ideal response?
Provide an appropriate response.Let f(n) = 
- 
. What is f(n) approximately equal to as n gets large? Hint: Compute various examples on your calculator.
A. 
B. 
C. 
D. 