Solve. If necessary, round to the nearest tenth.If a flagpole 15 feet tall casts a shadow that is 20 feet long, find the length of the shadow cast by an antenna which is 42 feet tall.
A. 31.5 ft
B. 47 ft
C. 7.1 ft
D. 56 ft
Answer: D
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Find the area of the region specified in polar coordinates.The region inside both 
and 
A. 16(? - 2) B. 8(? - 1) C. 8(? - 2) D. 16(? - 1)
Find the slope of the line that passes through the given two points. If the slope is undefined, state this.(1, 4) and (13, 19)
A. 
B. 
C. 
D. 
Determine whether or not the function is one-to-one.
A. Yes B. No
A landscape designer is working on the plans for a residential yard. Her clients want a privacy hedge planted on three sides of the rectangular backyard. (The side bordering the house will not be planted.) The plant selected for the hedge spans 5 when mature. If the backyard is 50 feet deep and 80 feet long and there is to be a plant at the corners of the hedge, how many hedge plants are required? (See sketch.)
What will be an ideal response?