Completely factor the expression.
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A. 
B. 
C. 
D. 
E. 
Answer: A
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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?
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.(5x)0
A. 1 B. 5 C. 5x D. 0
Using the definitions of "divisible" and "factor," answer the given question.Is 180 divisible by 5?
A. Yes B. No
Find the unit price.The trim for a costume costs $33.75 for 7.5 yards.
A. $17.50/yd B. $26.25/yd C. $41.25/yd D. $4.50/yd