Find the vertex of the parabola, and determine whether the parabola opens upward, downward, to the left, or to the right.x = (y + 1)2 + 1
A. (-1, -1), right
B. (1, -1), right
C. (1, 0), left
D. (0, 1), left
Answer: B
Mathematics
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Simplify the expression.
A. -sin x B. cos2x C. sin 2x D. -cos x
Mathematics
Solve the problem.To obtain a certain shade of paint, Peter mixed 1
gallons of white paint with 1
gallons of brown and 5
gallons of blue paint. How much paint did he have?
A. 
gallon
B. 2
gallons
C. 
gallon
D. 8
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Add. Do not use a number line except as a check.2.8 + (-6.1)
A. 8.9 B. 3.3 C. -3.3 D. -8.9
Mathematics