Use formulas to find the area of the plane region.
A. 226.87 mi2
B. 907.46 mi2
C. 53.38 mi2
D. 106.76 mi2
Answer: A
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Solve the problem.Find the dimensions of a rectangular enclosure with perimeter 40 yd and area 91 yd2.
A. 13 yd by 7 yd B. 16 yd by 7 yd C. 14 yd by 6 yd D. 15 yd by 6 yd
Find the common difference of the sequence.a1 = 6.52, a4 = 11.83; find d
A. 1.77 B. 1.3275 C. 6.52 D. 5.31
Find an equation for the ellipse described.Center at (0, 0); focus at (0, -6); vertex at (0, 7)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Describe the situation with a linear inequality and then solve the inequality.Lauren earns $2 an hour selling encyclopedias door-to-door. She also earns $28 in commission per set of encyclopedias sold. To pay her rent this week, she must earn at least $130, and she only has time to work 9 hours. How many sets of encyclopedias must Lauren sell this week in order to make her rent?
A. She would have to sell at least 3 sets of encyclopedias. B. She would have to sell at least 4 sets of encyclopedias. C. She would have to sell at least 6 sets of encyclopedias. D. She would have to sell at least 5 sets of encyclopedias.