Use a graphing calculator to sketch the graph of the quadratic equation, and then determine the x-intervals over which the graph is increasing and decreasing.y = x2 + 2x + 6
A. Increasing: (x > 1), Decreasing: (x < 1)
B. Increasing: (x < 1), Decreasing: (x > 1)
C. Increasing: (x > -1), Decreasing: (x < -1)
D. Increasing: (x < -1), Decreasing: (x > -1)
Answer: C
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Add or subtract.8
+ 12
A. 19
B. 8
C. 21
D. 20
Use the graph of the function f, plotted with a solid line, to sketch the graph of the given function g.g(x) = f(x - 1) 
A. 
B. 
C. 
D. 
Solve.The formula v = 
can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in feet. To the nearest whole number, find the radius of curvature if the maximum safe velocity is 35 miles per hour.
A. 196 ft B. 490 ft C. 3063 ft D. 1225 ft
Decide whether the expression is positive, negative or 0.(-1)5
A. Positive B. 0 C. Negative