Determine whether the statement is true or false.
Susan's salary increased from $40,000/year to $50,000/year over a 4-year period. Therefore, Susan got annual increases of 4% over that period.
a. True. This follows from formula A = P(1 + rt).
b. False. If Susan had gotten annual increases of 4 percent over 4 years, her salary would have been A=40,000(1+0.04)4, or approximately $46,794.34 after 4 years, not $50,000.
b. False. If Susan had gotten annual increases of 4 percent over 4 years, her salary would have been A=40,000(1+0.04)4, or approximately $46,794.34 after 4 years, not $50,000.
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Find the LCD of the rational expressions. Then rewrite each as an equivalent rational expression with the LCD.
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A. 
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B. 
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C. 
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D. 
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If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.r = 19 inches, ? = 90°, A = ?
A. 29.83 in2 B. 14.92 in2 C. 566.77 in2 D. 283.39 in2
Find the perimeter of the figure.
A. 56 km B. 112 km C. 105 km D. not enough information given
Factor.-128x2 + 96xy - 18y2
A. -2(8x + 3y)2 B. -2(8x - 3y)2 C. -2(8x + 3y)(8x - 3y) D. 2(8x + 3y)2