Graph the rational function.f(x) = 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.The population of a particular city is increasing at a rate proportional to its size. It follows the function 
where k is a constant and t is the time in years. If the current population is 40,000, in how many years is the population expected to be 100,000? (Round to the nearest year.)
A. 3 yr B. 8 yr C. 59 yr D. 5 yr
Subtract.-160 - ( -23 )
A. 183 B. -137 C. -183 D. 137
Select the correct graph of the polar equation. Describe your viewing window.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Solve the problem.A vendor has learned that, by pricing hot dogs at $1.25, sales will reach 127 hot dogs per day. Raising the price to $2.25 will cause the sales to fall to 75 hot dogs per day. The number of hot dogs, N, is a linear function of the price, x. Write a linear function that models the number of hot dogs sold per day when the price is x dollars each.
A. N(x) = 52x + 62
B. N(x) = -52x + 192
C. N(x) = -52x - 192
D. N(x) = - 
x + 