Determine whether the given expression is a polynomial. If it is, write it in standard form.8x3 - 18 + 8x2
A. Yes; 8x3 + 8x2 - 18
B. No
Answer: A
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Evaluate the expression.-(-5)4
A. -625 B. 625
Write an algebraic equation and use it to solve the problem.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: 600 feet Lincoln Galleria: 200 feet Jefferson Square Tower: 1000 feet B. Washington Center: 690 feet Lincoln Galleria: 230 feet Jefferson Square Tower: 880 feet C. Washington Center: 400 feet Lincoln Galleria: 200 feet Jefferson Square Tower: 1200 feet D. Washington Center: 520 feet Lincoln Galleria: 320 feet Jefferson Square Tower: 960 feet
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 10 feet away when it has an intensity of 
W/m2.
A. ? 45 dB B. ? 75 dB C. ? 55 dB D. ? 65 dB
Divide. If the division is not possible, write "undefined."
A. 21 B. 1 C. 0 D. Undefined