The maximum length of a certain fish is 21 inches. Each year the difference D, in inches, between its maximum length and its current length L, in inches, decreases by 12%. The initial difference is 19 inches.
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A: Find a formula that gives the length difference D after ?t years.
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B: The length difference is 
. Find a formula that gives its length after t months.
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C: When will the fish reach 17 inches long? Round your answer to two decimal places if necessary.
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What will be an ideal response?
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B: 
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C: After 12.19 years
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The graph of a trigonometric function of the form y = A sin (Bx) or y = A cos (Bx) for B > 0 is given. Determine the equation of the function represented by the graph.
A. y = 2 sin 4x
B. y = 4 sin 2x
C. y = 4 sin 
x
D. y = 2 sin 
x
Subtract and, if possible, simplify.
- 
A. 
B. 
C. 
D. 
Provide an appropriate response.Make this statement true: 3 = 1 yd
A. 3 in = 1 yd B. 3 ft = 1 yd
Solve the equation.
(9x - 12) = 
(20x - 15)
A. {-1}
B. {-12}
C. 
D. {1}