Solve the problem.The area A of a rectangle is 
If the width W of the rectangle is 
find the length L of the rectangle when 
feet.
A. 22 ft
B. 18 ft
C. 28 ft
D. 19 ft
Answer: A
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Use Euler's method to calculate the first three approximations to the given initial value problem for the specified increment size. Round your results to four decimal places.y' = 1 + 
, y(4) = -1, dx = 0.5
A. y1 = -1.2500, y2 = -0.3889, y3 = 1.1444 B. y1 = -1.2500, y2 = -0.2917, y3 = 0.5722 C. y1 = -0.9375, y2 = -0.2333, y3 = 0.3433 D. y1 = -0.6250, y2 = -0.1944, y3 = 0.2861
Find the standard deviation. Round to one more place than the data.71, 28, 76, 55, 79, 88, 26, 78, 45
A. 24.7 B. 21.8 C. 7.6 D. 23.1
Find the length of the curve.x = 7 sin t - 7t cos t, y = 7cos t + 7t sin t, 0 ? t ? 
A. 
?2
B. 
?2
C. 
?
D. 
?2
Solve.Subtract: (9x2 - 14x - 12) - (4x2 + 17x + 8)
A. 5x2 - 10x - 4 B. 5x2 - 31x - 4 C. 5x2 - 31x - 20 D. -46x7