Solve the problem.A small farm field is a square measuring 320 ft on a side. What is the perimeter of the field? If you double the length of each side of the field, what is the new perimeter?
A. 640 ft, 2560 ft
B. 320 ft, 1280 ft
C. 640 ft, 1280 ft
D. 1280 ft, 2560 ft
Answer: D
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Graph the function.f(x) = 1.5x - 3
A. 
B. 
C. 
D. 
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.
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What will be an ideal response?
The following table shows the stopping distance D, in feet, for a car that is traveling at a speed of S miles per hour. S 25 35 40 60 75 D 89 138 167 304 436? Use power regression to answer the following question. If the speed is cut in half, how is the stopping distance affected? Round your answer to two decimal places. ?
A. The stopping distance is multiplied by 0.37. B. The stopping distance is multiplied by 0.50. C. The stopping distance is multiplied by 1.52. D. The stopping distance is multiplied by 1.20.
Evaluate the expression, given x = -2, y = 3, and a = -4.(8 + x)(9 + y)(-2 - a)
A. -144 B. 144 C. -432 D. -720