Solve the problem.The length and width of a rectangle have a sum of 80. What dimensions give the maximum area?
A. Length 39 and width 41
B. Length 30 and width 50
C. Length 31 and width 49
D. Length 40 and width 40
Answer: D
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Find the least common denominator.
, 
, 
A. 10x5y4 B. 6x5y C. 15x20y12 D. 30x5y4
Solve the problem. If necessary, round your result to the nearest tenth unless instructed differently. The precise value of your approximation may depend on the conversion path that you choose.Jessica bought a 4 liter bottle of cola for her party. She estimates that the guests will drink a total of 25 cups of cola. How many more cups of cola will she need? Round your result to the nearest cup.
A. 8 c B. 96 c C. 17 c D. 217 c
Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Find the discount and proceeds on the simple discount note.Face value: $5,000.00Discount rate: 11%Time (days): 60
A. Discount: $90.41 Proceeds: $4,909.59 B. Discount: $0.00 Proceeds: $5,000.00 C. Discount: $91.67 Proceeds: $4,908.33 D. Discount: $550.00 Proceeds: $4,450.00