Solve the linear equation graphically.-x + 1 = -1Values of -x + 1
A. -1
B. 0
C. 2
D. 3
Answer: C
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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?
Factor completely. If the polynomial is prime, state so.20x2 - 60x3 + 45x4
A. prime B. 5x2(3x + 2)2 C. 5x2(3x + 2)(3x - 2) D. 5x2(3x - 2)2
Solve the problem.EJ can overhaul a boat's diesel inboard engine in 15 hours. His apprentice takes 30 hours to do the same job. How long would it take them working together assuming no gain or loss in efficiency?
A. 45 hr B. 10 hr C. 4 hr D. 6 hr
Simplify. Assume that all factors in radicands represent real numbers that are greater than or equal to 0.
A. 
B. 
C. 
D. none of these