Find the total amount in the compound interest account.$18,000 at 5% compounded annually for 5 years
A. $21,600.00
B. $21,879.11
C. $22,500.00
D. $22,973.07
Answer: D
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Graph the function.Use the graph of f(x) = 2x to obtain the graph of g(x) = - 2x.
A. 
B. 
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D. 
Solve the problem.The number of households in Country X with personal computers (PCs) and the total number of households in Country X are shown in the table below for various years.Households with Personal Computers (Millions)YearHouseholds with PCs Total Households200528.2195.5200930.4598.0201149.80100.5201559.82102.2201767.42114.0Let C(t) be the number (in millions) of households in Country X with PCs and H(t) be the total number (in millions) of households in Country X, both at t years since 2002. (i) Find equations of C and H.(ii) Estimate when fewer than 40% of households in Country X had PCs.
A. (i) C(t) = 3.67t + 9.63; H(t) = 4.30t + 52.37; (ii) Before 2005, fewer than 40% of households in Country X had PCs. B. (i) C(t) = 5.53t + 12.86; H(t) = 2.53t + 79.41; (ii) Before 2012, fewer than 40% of households in Country X had PCs. C. (i) C(t) = 4.81t + 16.01; H(t) = 0.99t + 68.42; (ii) Before 2014, fewer than 40% of households in Country X had PCs. D. (i) C(t) = 3.50t + 14.22; H(t) = 1.31t + 89.70; (ii) Before 2009, fewer than 40% of households in Country X had PCs.
Decide whether perimeter or area would be used to solve a problem concerning the measure of the quantity.Tilling a garden
A. Area B. Perimeter
Find the vertex, focus, and directrix of the parabola with the given equation.(x + 1)2 = 20(y + 3)
A. vertex: (-1, -3) focus: (-1, -8) directrix: x = 2 B. vertex: (-3, -1) focus: (-3, 4) directrix: y = -6 C. vertex: (1, 3) focus: (1, 8) directrix: y = -2 D. vertex: (-1, -3) focus: (-1, 2) directrix: y = -8