Give the largest interval where the function increases or decreases, as requested.f(x) = x2 + 8; decreases
A. (-8, 0)
B. (0, 8)
C. (-?, 0)
D. (0, ?)
Answer: C
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Solve the equation in the complex number system.x2 + 6x + 25 = 0
A. {-3 + 4i} B. {-3 - 16i, -3 + 16i} C. {1, -7} D. {-3 + 4i, -3 - 4i}
Solve the problem.A bicycle wheel makes 4 revolutions. Determine how far the bicycle travels in inches if the diameter of the wheel is 23 in. 
Round to the nearest tenth.
A. 577.8 in. B. 72.2 in. C. 288.9 in. D. 92 in.
If the lengths of three sides of a triangle are known, then the following formula, known as Hero's (or Heron's) formula is sometimes used:
? 
?wherea,b, andcare the given lengths of the sides, and 
. Use this formula to find the area of a triangle with the lengths given below (correct to the nearest square foot).
? 
ft, 
ft, and 
ft
?
A. 41 ft2
B. 3 ft2
C. 6 ft2
D. 13 ft2
E. 14 ft2
Solve the equation.(2y + 15)(3y + 16) = 0
A. {
, 
}
B. {- 
, - 
}
C. {13, 13}
D. {- 
, - 
}