Find the exact value of the expression if ? = 30°. Do not use a calculator.f(?) = tan ?Find f(?).
A. 
B. 1
C. 
D. 
Answer: A
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Solve the problem.A water tank is formed by revolving the curve y = 3x4 about the y-axis. Find the volume of water in the tank as a function of the water depth, y.
A. V(y) = 
y1/2
B. V(y) = 
y3/2
C. V(y) = 
y3/2
D. V(y) = 
y9
Perform the indicated operation.A factor used in measuring the loudness sensed by the human ear is 
0.3, where I is the intensity of the sound and I0 is a reference intensity. Evaluate this factor for I = 3.3 × 10-6 W/m2 and I0 = 1.0 × 10-12 W/m2 to two significant digits.
A. 0.011 B. 0.023 C. 44 D. 90
Graph the equation.y = 3x
A. 
B. 
C. 
D. 
Fill in the blank with one of the words or phrases listed below. Some words may be used more than once.
= tax rate ? purchase price.
A. Total price B. Sale price C. Amount of discount D. Sales tax