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 intensity of a 45 dB sound.
A. I = 10-7.5 W/m2
B. I = -7.510 W/m2
C. I = 10438 W/m2
D. I = 1016.5 W/m2
Answer: A
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The following table shows the cost C, in dollars, of taking k kids to a water park.
1 2 3 4
$43 $59 $75 $91?
Which formula below fits these data?
?
A. 
B. 
C. 
D. None of the above
Solve the problem.Use Newton's method to estimate the solutions of the equation 
. Start with 
for the right-hand solution and with x0 = -2 for the solution on the left. Then, in each case find x2.
What will be an ideal response?
Solve.x3 - 64 (Hint: Factor the difference of cubes. Then use the quadratic formula.)
A. -4, -2 ± 2i
B. 4, -2 ± 2i
C. -4, -1 ± i
D. 4, -1 ± i
State the phrase as a mathematical expression. Use x to represent the variable.The quotient of a number and five
A. 5x
B. 5 + x
C. 5 - x
D. 