Identify the vertex of the quadratic equation.f(x) = x2 - 7
A. (0, -7)
B. (7, 0)
C. (1, 0)
D. (0, 7)
Answer: A
Mathematics
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Assume the region is part of a vertical side of a tank with water (? = 62.4 
2 2
A. 416.00 lb B. 332.80 lb C. 249.60 lb D. 499.20 lb
Mathematics
Find the length of the unknown side of the right triangle. In each case, a and b represent the lengths of the legs and c represents the length of the hypotenuse.
b = 9, c = 15; find a
A. 14 B. 12 C. 15 D. 11
Mathematics
Solve the inequality. Express your answer in set notation.x2 ? 49
A. {x| -7 ? x ? 7} B. {x| x ? -7 or x ? 7} C. {x| x < -7 or x ? 7} D. {x| x < -7 or x > 7}
Mathematics
Add.-17.8 + 15.7
A. -2.1 B. -33.5 C. 33.5 D. 2.1
Mathematics