Solve the problem.A tree 9 feet high grows at a rate of 2 feet each year. How many years will it take for the tree to grow to a height of 19 feet?
A. 5 years
B. 2 years
C. 10 years
D. 8 years
Answer: A
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The decibel level D, a measure of loudness of sound, can be calculated from the relative intensity I of sound. The relationship is
.
A: If one sound is 1,000 times as intense as another, how do their decibel ratings compare?B: Is the graph of D versus I concave up or concave down? Explain what the concavity means in practical terms.C: Solve the equation above to express relative intensity as a function of decibels.
?
What will be an ideal response?
Solve the problem.Suppose that the average monthly low temperatures for a small town are shown in the table.
Model this data using f
= a sin 
+ d.
A. f
= 23sin 
+ 42
B. f
= 23sin 
+ 42
C. f
= 23sin 
+ 42
D. f
= 42sin 
+ 23
A production editor decided that a promotional flyer should have a 1-in. margin at the top and the bottom, and a 1/2-in. margin on each side. The editor further stipulated that the flyer should have an area of 72
. Determine the dimensions of the flyer that will result in the maximum printed area on the flyer.
Determine graphically the x-value when y = 6 in the given equation.y = -2x
A. -3;
B. -12;
C. -2;
D. 6;