Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Answer: B
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Use a sketch to find the exact value of y.y = sin(tan-1 2)
A. 5
B. 
C. 
D. 2
Write the expression in the standard form a + bi.If z = 9 - 3i, evaluate z + 
.
A. 18 - 6i B. 18 + 6i C. -6i D. 18
Solve the problem.The temperature of water in a certain lake on a day in October can be determined by using the model 
where x is the number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, how deep in the lake is the water 8 degrees? (Round to the nearest foot.)
A. 13 ft B. 69 ft C. 43 ft D. 32 ft
Find the domain and range of the quadratic function whose graph is described.The maximum is -5 at x = -1
A. Domain: (-?, ?) Range: (-?, -5] B. Domain: (-?, ?) Range: (-?, -1] C. Domain: (-?, ?) Range: [-5, ?) D. Domain: (-?, -1] Range: (-?, -5]