Solve.How long will it take for prices in the economy to double at a 5% annual inflation rate? Use the exponential growth model 
(Round to the nearest year.)
A. 12 yr
B. 23 yr
C. 14 yr
D. 17 yr
Answer: C
Mathematics
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Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function decreases most rapidly.
A. - 
B. - 
C. - 
D. - 
Mathematics
Find the product and write the result in standard form.(4 - 8i)2
A. -48 - 64i B. 16 - 64i + 64i2 C. 80 - 64i D. -48
Mathematics
Solve the problem.A car dealer advertised a big sale by stretching a string of banners from the top of the building to the edge of the driveway. If the building is 25 m high and the driveway is 49 m from the building, how long is the string of banners?
A. 35.4 m B. 42.1 m C. 8.6 m D. 55.0 m
Mathematics
Determine whether the graph of the equation is a circle or an ellipse.9x2 + 90x + 25y2 - 50y + 25 = 0
A. Ellipse B. Circle
Mathematics