Find the vertex.f(x) = 3x2 + 12x + 16
A. (-2, 4)
B. (2, -4)
C. (-4, 2)
D. (4, -2)
Answer: A
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Write the Hindu-Arabic numeral as an Egyptian numeral using the table below.
1,235,042
A. 
B. 
C. 
D. 
Solve the problem.A conservation officer needs to know the width of a river in order to set instruments correctly for a study of pollutants in the river. From point A, the conservation officer walks 105 feet downstream and sights point B on the opposite bank to determine that ? = 50° (see figure). How wide is the river (round to the nearest foot)? 
A. 125 ft B. 80 ft C. 163 ft D. 88 ft
Solve the problem.Find the measure (in radians) of a central angle of a sector of area 55 square inches in a circle of radius 8 inches. Round to the nearest hundredth.
A. 0.86 radians B. 1.72 radians C. 2.58 radians D. 3.44 radians
Find a system of inequalities with the given graph.
A. y ? -2x + 1 y ? 2x - 3 B. y ? -2x - 3 y ? 2x - 3 C. y ? -2x + 1 y ? 2x - 3 D. y ? -2x + 1 y ? 2x + 1