Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.ln x = 4
A. {ln 4}
B. 
C. 
D. 
Answer: B
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Solve the given applied problems involving variation.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 ft from a light is 
find the intensity on a screen 20 ft from the light.
A. 2 foot-candles B. 0.11 foot-candle C. 0.13 foot-candle D. 8 foot-candles
For the function provided, find all values of x for which f(x) satisfies the indicated condition. Graph the solution on a number line.f(x) = x2 + 4x + 3, f(x) ? 0
A. 
B. 
C. 
D. 
For the pair of functions, find the indicated domain.f(x) = x2 - 16, g(x) = 2x + 3Find the domain of g ? f.
A. 
? 
B. (-4, 4)
C. (-?, ?)
D. 
Use a half-angle formula to find the exact value of the expression.sin 105°
A. 
B. - 
C. - 
D. 
