The table below shows the number N of persons injured per 100 accident-involved vehicles when the accident speed was s miles per hour.
s 20 30 40 50 60 N 28 34 38 46 71?
A: Use exponential regression to model N as a function of s. Round your answer to two decimal places.B: Plot the exponential model along with the data points.C: Do the data show that accidents at speeds of 60 miles per hour are more dangerous or less dangerous than predicted by the model?
What will be an ideal response?
B:
?
?
C: They are more dangerous.
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Use the decibel scale to answer the question.What is the loudness, in decibels, of a sound 33 trillion times as loud as the softest audible sound?
A. 162 dB B. 108 dB C. 189 dB D. 135 dB
Find the GCD for the given numbers by an appropriate method.30 and 90
A. 30 B. 10 C. 6 D. 15
The following is a 4 8 array of dots.
(a) If 10 dots are removed, how can you arrange the remaining dots so that each row and
each column of the array contain an odd number of dots? Sketch the new arrangement
or explain why it cannot be done.
(b) If 12 dots are removed, how can you arrange the remaining dots so that there is the
same number of dots along each edge? Sketch the new arrangement or explain why it
cannot be done.
Solve the problem.Glenn and Paula want to dig an irrigation channel for their garden. Together it takes them 
to dig an appropriately sized irrigation channel. If Paula can dig the channel by herself in 
how long would it take Glenn to dig the channel by himself? Round to the nearest tenth, if necessary.
A. 1 hr B. 2.3 hr C. 4 hr D. 3.8 hr