Solve the system of equations by the substitution method.
A. {(-5, 8)}
B. {(8, 5)}
C. {(5, 8)}
D. ?
Answer: C
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Sketch a scatter plot of the data shown in the table.The table shows the lowest temperature on record y (in degrees Fahrenheit) in Duluth, Minnesota for each month x where x = 1 represents from January. Months, x Temperature, y 1 -46 2 -36 3 -23 4 -7 5 14 6 25 7 31 8 42 9 24 10 3 11 -26 12 -15
A. 
x: Months (1 ? January)
y: Temperature (in Fº)
B.
x: Months (1 ? January)
y: Temperature (in Fº)
C.
?
x: Months (1 ? January)
y: Temperature (in Fº)
D.
?
x: Months (1 ? January)
y: Temperature (in Fº)
E.
x: Months (1 ? January)
y: Temperature (in Fº)
Find the slope of the line.
A. 0 B. 2 C. -2 D. Undefined
Factor out the greatest common factor.5x2 + 20x
A. 5x2(x + 4) B. x(5x + 20) C. 5x(x + 4) D. 5x(x + 20)
Solve triangle, if possible. Round angles an side lengths to the nearest tenth when necessary. 
A. C = 103°, a ? 10.8, b ? 19.1 B. C = 97°, a ? 10.6, b ? 18.8 C. C = 103°, a ? 53.3, b ? 30.1 D. C = 103°, a ? 19.1, b ? 10.8