Find the reference angle for the given angle.-21°
A. 159°
B. 21°
C. 111°
D. 69°
Answer: B
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Solve the linear equation using the multiplication property of equality.7x = 2
A. x = 
B. x = -5
C. x = 
D. x = 14
The graph of the function f is shown below. Match the function g with the correct graph.g(x) = f(x + 3)
A. 
B. 
C. 
D. 
Write the system in the form 
Then solve the linear system by computing 
with a calculator. Round numbers to the nearest tenth, as necessary.2.3x - 1.5y - 3.3z = 4.44.6x - 7.0y + 0.9z = -2.83.1x + 2.1y + 3.1z = 3.2
A. (0.9, 0.8, -0.7) B. (0.3, 0.3, -0.2) C. (1.2, 1.1, -1.0) D. (0.6, 0.5, -0.5)
Solve.In recent years, many states have passed laws against smoking in public buildings. The total number of states N that have passed a no smoking in public buildings law, t years after 1982 is given by the functionN(t) = 
How many states had passed the law in 1982? Round to the nearest whole number.
A. 4 B. 3 C. 1 D. 0