A Norman window has the shape of a rectangle surmounted by a semicircle as in the figure below. If the perimeter of the window is 40 ft, express the area, A, as a function of the width, x, of the window.
A. 
B. 
C. 
D. 
E. 
Answer: A
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Use Newton's Law of Cooling to solve the problem.A loaf of bread is removed from an oven at 
and cooled in a room whose temperature is 
. If the bread cools to 
in 20 minutes, how much longer will it take the bread to cool to 
A. 27 min B. 19 min C. 8 min D. 7 min
Divide. Simplify, if necessary.- 
÷ 
A. - 
B. - 
C. 
D. - 
A doctor orders 25 mL of medication to be added to 100 mL D5W and infused at a rate of 20 mL/hr. How long will it take for this infusion to be complete?
A. 6 hr 25 min B. 6 hr 15 min C. 5 hr D. 6 hr 5 min
Solve the problem.The minute hand of a clock is 4 inches long. How far does the tip of the minute hand move in 20 minutes? Round your answer to two decimal places when necessary.
A. 9.61 in. B. 10.89 in. C. 6.64 in. D. 8.38 in.