Determine the order of the matrix.
A. 2 × 2
B. 4
C. 1
D. 2
Answer: A
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A child is 22 inches long at birth and grows to an adult height of 70 inches.
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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.
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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.
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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.
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D: Use the information you found in part C to make a logistic model of height versus age.
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Round your answers to two decimal places, if necessary.
What will be an ideal response?
Convert.68 quarts = gallons
A. 17 B. 136 C. 272 D. 34
Perform the indicated operations and express your answer in the form a + bi. 
A. 3i
B. -i
C. ±3
D. -3i
Use the graph of y = f(x) to find the limit.
f(x)
A. ? B. -? C. -2 D. 0