Solve the equation.
2x + 4 = 9x - 2
A. 
B. 
C. 
D. 
Answer: D
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Use the vertex and intercepts to sketch the graph of the equation. Give the equation for the parabola's axis of symmetry.x = -2(y - 1)2 + 3
A. Axis of symmetry is x = -1.
B. Axis of symmetry is y = -1.
C. Axis of symmetry is y = 1.
D. Axis of symmetry is x = 1.
Factor out the largest common factor.3n2 + 18n - 12
A. 3(n2 + 6n - 12) B. 3n(n + 2) C. 3(n2 + 6n - 4) D. 3(-n2 - 6n + 4)
Solve the problem.A power boat in still water maintains a speed of 40 miles per hour. The boat heads directly across a river perpendicular to the current which has a speed of 8 miles per hour. Find the actual speed and direction of the boat.
A. 40 miles per hour; 12° off course B. 16 miles per hour; 30° off course C. 20 miles per hour; 24° off course D. 41 miles per hour; 11° off course
Estimate. Then find the actual quotient.6.91 ÷ (-10,000)
A. Estimate: -0.0007; Actual: -0.000691 B. Estimate: -0.007; Actual: -0.00691 C. Estimate: -0.07; Actual: -0.0691 D. Estimate: -0.00007; Actual: -0.0000691