What are the dimensions of a rectangular tract of land if its perimeter is 50 kilometers and its area is 150 square kilometers?
?
A. 14 km × 19 km
B. 10 km × 19 km
C. 12 km × 15 km
D. 10 km × 15 km
E. 12 km × 17 km
Answer: D
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Solve the problem.The table shows the number of new cases (in thousands) of a certain disease diagnosed in a country in various years. 
Let f(t) be the number of new cases (in thousands) of the disease diagnosed at t years since 2010. Use a quadratic model to predict when the number of new cases of the disease diagnosed will be 53,700. (First find a quadratic equation for f in vertex form by using the data for the years 2013 and 2017).
A. 2021 B. 2019 C. 2020 D. 2022
Find the vertices and graph the hyperbola.x2 - 4y2 = 64
A. (0, -8), (0, 8)
B. (-4, 0), (4, 0)
C. (-4, 0), (4, 0)
D. (-8, 0), (8, 0)
Graph the function.f(x) = x2
A. 
B. 
C. 
D. 
Solve the system of equations.
A. x = 3z + 5 y = z - 2 z = any real number B. x = -3z - 5 y = z + 2 z = any real number C. inconsistent (no solution) D. x = z - 2 y = -3z - 5 z = any real number