Find the next term of the sequence.
?
3, 6, 10, 15, ...
?

A. 21
B. 25
C. 46
D. 22
E. 20

Answer: A

Mathematics

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Change the following mixed number to a fraction in the form , where a and b are integers and b ? 0. ?4

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B.
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D.

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Solve.The function  represents the yearly income (or loss) from a real estate investment, where t is time in years. After what year does income begin to decline?

A. 5.5 B. 8.67 C. 13 D. 6.5

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Find the vertex, focus, and directrix of the parabola with the given equation.(y - 1)2 = 16x

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Solve.If the three lengths of the sides of a triangle are known, Heron's formula can be used to find its area. If a, b, and c are the three lengths of the sides, Heron's formula for area is: A = where s is half the perimeter of the triangle, or s = (a + b + c).Use this formula to find the area of the triangle if a = 9 cm, b = 11 cm and c = 16 cm. 

A. 18 sq. cm
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C. 18 sq. cm
D. 180 sq. cm

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Mathematics