Find 
by using the Chain Rule. Express your final answer in terms of t.w = x3y2; x = t4, y = t3
A. 19t18
B. 12t11 + 6t5
C. 17t16
D. 18t17
Answer: D
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For certain ships the diameter d, in feet, of the propeller depends on the maximum revolutions per minute r the propeller turns. The relation is given by
.
A: Make a graph of d versus r. Include up to 200 maximum revolutions per minute.B: What diameter corresponds to a maximum revolutions per minute of 109?C: What maximum revolutions per minute corresponds to a diameter of 20 feet?
?
Round your answer to two decimal places if necessary.
?
What will be an ideal response?
Solve the problem.Give an expression for a function defined by f(x) with the following properties: 
is a polynomial,
A. f(x) = 
B. f(x) = x3 + 1
C. f(x) = x2 + 1
D. f(x) = e-x
Factor completely. If the polynomial cannot be factored, write "prime."3x3 + 15x2 - 18x
A. x(3x + 18)(x - 1) B. x(x + 6)(3x - 3) C. 3x(x + 6)(x - 1) D. 3(x2 + 6x)(x - 1)
Use addition to check the subtraction problem. If the answer is incorrect, find the correct answer.
49
A. Correct B. Incorrect; should be 48 C. Incorrect; should be 149 D. Incorrect; should be 59