Write the quadratic function in the standard form y = a(x - h)2 + k.y = -3x2 - 24x - 44
A. y = 3(x + 4)2 + 4
B. y = -3(x - 4)2 + 4
C. y = (x + 4)2 + 4
D. y = -3(x + 4)2 + 4
Answer: D
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Solve the problem involving related quantities.The three most prominent buildings in a city, Washington Center, Lincoln Galleria, and Jefferson Square Tower, have a total height of 1800 feet. Find the height of each building if Jefferson Square Tower is three times as tall as Lincoln Galleria and Washington Center is 200 feet taller than Lincoln Galleria.
A. Washington Center: 690 ft Lincoln Galleria: 230 ft Jefferson Square Tower: 880 ft B. Washington Center: 520 ft Lincoln Galleria: 320 ft Jefferson Square Tower: 960 ft C. Washington Center: 600 ft Lincoln Galleria: 200 ft Jefferson Square Tower: 1000 ft D. Washington Center: 400 ft Lincoln Galleria: 200 ft Jefferson Square Tower: 1200 ft
Multiply.(5i)(8i)
A. -40 B. 13 C. 40 D. -13
Solve the problem.The loudness of a sound is measured in decibels (dB). The loudness L of a sound is related to its intensity I by the equation 
where I0 = 10-12 watts per square meter (W/m2) is the intensity of the faintest sound the human ear can detect. Find the dB level of a radio at average volume from 8 feet away when it has an intensity of 
W/m2.
A. ? 95 dB B. ? 105 dB C. ? 85 dB D. ? 115 dB
Solve.The period of vibration P for a pendulum varies directly as the square root of the length L. If the period of vibration is 4 sec when the length is 64 inches, what is the period when L = 3.0625 inches?
A. 0.875 sec B. 5 sec C. 4.75 sec D. 4.25 sec