Use the Trapezoidal Rule to approximate 
with n = 6. Round your answer to two decimal places.
?
A. 12.51
B. 3.65
C. 5.21
D. 2.34
E. 6.25
Answer: E
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?Which of the following does not represent a valid approach to solving the following problem: Find 9% of 60. ?
A.
?0.09 × 60 = ____ (solve by multiplying)
B.
?
× 60 = ____ (solve by multiplying)
C.
?
(solve for x by cross-multiplying)
D.
?0.9 × 60 = ___ (solve by multiplying)
E.
?I. 0.01 × 60 = 0.6, II. 0.6 × 9 = 5.4
Express the vector as a product of its length and direction.
i - 
j + 
k
A. 
B. 
C. 
D. 
Solve the problem.Two forces, of 52.0 and 51.7 lb, forming an angle of 165.6°, act at a point in the plane. Find the magnitude of the resultant force.
A. 13.0 lb B. 103.7 lb C. 2603.9 lb D. 102.9 lb
A child is 22 inches long at birth and grows to an adult height of 70 inches.
?
?
A: Make a logistic model of the height H, in inches, at age t years. Note: Thus far you are not given sufficient information to determine the value of r in the expression 
. Just leave that term as a variable.
?
B: In the model from part A we think of restricting the age to 15. That corresponds to putting 
in the formula, so H is a function of r. Make a graph of H versus r with . You may assume that r is no larger than 1.
?
C: Use your graph in part B to determine for what value of r the person will reach 90% of adult height at age 15.
?
D: Use the information you found in part C to make a logistic model of height versus age.
?
Round your answers to two decimal places, if necessary.
What will be an ideal response?