Solve the problem.The average height of a boy in the United States, from birth through 60 months, can be modeled by 
where y is the average height, in inches, of boys who are x months of age. What would be the expected difference in height between a child 25 months of age and a child 16 months of age?
A. 2.9 in.
B. 4.9 in.
C. 43.1 in.
D. 14.5 in.
Answer: A
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Using the Law of Sines, find angle C and sides a and b if angle A = 30ø, B = 70ø and side c = 10.
What will be an ideal response?
Solve the problem.Mel plans to fence his yard for his new puppy. The yard is a 47 ft by 85 ft rectangle. Fencing costs $12 per 10 ft section. What is the cost of the fence not including unused fencing?
A. $158.40 B. $112.80 C. $633.60 D. $316.80
A cellular telephone tower that is 150 feet tall is placed on top of a mountain that is 1200 feet above sea level. What is the angle of depression from the top of the tower to a cell phone user who is 6 horizontal miles away and 400 feet above sea level? Round your answer to two decimal places. ?
A. 3.72º B. 1.72º C. 5.72º D. 4.72º E. 2.72º
Solve the equation.3x = 81
A. 27 B. 5 C. 4 D. 3