Solve the equation and check your proposed solution.
= 13
A. 18
B. -65
C. 65
D. -18
Answer: B
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In a certain lake the intensity of light from the surface decreases by 40% for each additional meter of depth.
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A: Explain why light intensity is an exponential function of depth.
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B: Using 
for intensity at the surface of the lake, write a formula that gives the intensity I of light ?d meters below the surface.
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C: At what depth will light intensity be one tenth of surface intensity? Round your answer to two decimal places if necessary.
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What will be an ideal response?
Use a day counting table to find the exact number of days from the first date to the second date. Assume the year is not a leap year unless otherwise indicated.December 3 to May 19 (the year of the May date is a leap year)
A. 169 B. 168 C. 167 D. 166
Convert the angle to decimal degrees and round to the nearest hundredth of a degree.-163°18'55''
A. -163.32° B. -163.36° C. -163.31° D. -163.26°
Find the area of the rectangle.
A = 
in.B = 11 in.
A. 2 in.2
B. 
in.2
C. 
in.2
D. 
in.2