Solve the problem.The expression 0.60(226 - a - r) + r is used to obtain the target heart rate for a cardiovascular workout for a nonathletic female with age a and resting heart rate r. The accompanying table shows the target heart rate for a 19-year-old nonathletic female for various resting heart rates. Find the missing entries. 
A. 155; 157.4
B. 154.6; 158.6
C. 153.8; 156.6
D. 154.2; 158.2
Answer: D
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Solve the problem.A population grows according to the logistic growth model, with growth parameter r = 0.9 and initial population given by p0 = 0.2. What does the logistic growth model predict in the long term for this population?
A. extinction B. The population settles into a two-period cycle alternating between a high-population period at 14.4% and a low-population period at 3% of the habitat's carrying capacity. C. It stabilizes at 3% of the habitat's carrying capacity. D. The population settles into a four-period cycle with the following approximate percentages of the habitat's carrying capacity: 14.4%, 8.8%, 11.1%, 7.2%. E. unlimited growth
Provide an appropriate response.The revenue R for a product is given by R(x) = 1750x - x2 where x is the number of units sold. Graph this function on your graphing calculator in several different viewing rectangles. Discuss whether you think this function is continuous or not.
What will be an ideal response?
Solve the problem by using three variables.The largest angle of a triangle is 6 times the smallest angle and it is 3 times the other angle. Find the measure of the smallest angle.
A. 40° B. 20° C. 30° D. 10°
Provide an appropriate response.Which of the following complex fractions is equivalent to 
?
A. 
B. 
C. 
D. 