Identify the following as rational or irrational. If the number is rational, find the root exactly. If the number is irrational, approximate the number to the nearest thousandth when necessary.
A. Rational; 25.5
B. Irrational; 7.141
C. Rational; 102
D. Rational; 51
Answer: D
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Sketch the graph of the function over the interval 0 ? x ? 2?.y = -3 sin 
A. 
B. 
C. 
D. 
Solve the system of linear equations.
x - y = 
x - 
y = 
A. (4, -6) B. (1, -4) C. (3, -1) D. No solution
Solve the problem.Pennies are packaged 50 in a roll. A mother gave her son 191 pennies for his bank and had 9 pennies left over. How many rolls of pennies did she use?
A. 6 rolls B. 7 rolls C. 5 rolls D. 4 rolls
Find the vertex, the y-intercept, and the x-intercepts (if any exist), and graph the function.y = x2 - 49
A. vertex (0, -49)
x-int: (0, 0) and (7, 0)
y-int: (0, 0)
B. vertex (0, -49)
x-int: (0, 0) and (-7, 0)
y-int: (0, 0)
C. vertex (0, -49)
x-int: (-7, 0) and (7, 0)
y-int: (0, -49)
D. vertex (0, 49)
x-int: (-7, 0) and (7, 0)
y-int: (0, 49)