Translate the problem to a system of equations, then solve using Cramer's Rule.Jerry has 3 pieces of string. The total length is 82 inches. The sum of the two longer pieces is 70. The middle piece is twice as long as the shortest piece. What are the lengths of the 3 pieces?
A. 6, 12, and 64 inches
B. 12, 24, and 46 inches
C. 12, 46, and 56 inches
D. No solution
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.
?
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.
?
C: At what depth will light intensity be one tenth of surface intensity? Round your answer to two decimal places if necessary.
?
What will be an ideal response?
Determine if the series defined by the formula converges or diverges.a1 = 
, an+1 = 
A. Diverges B. Converges
Solve the equation by using the square root property. Simplify all radicals.(7m - 1)2 - 63 = 0
A. 
B. 
C. 
D. 
A point on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(- 
, 
) Find cos ?.
A. - 
B. - 
C. 
D. 