Solve the problem.The perimeter of a rectangle is 134 inches. Find its dimensions if the width is 10 inches more than one-half its length.
A. length: 19 in.; width: 29 in.
B. length: 38 in.; width: 29 in.
C. length: 38 in.; width: 190 in.
D. length: 38 in.; width: 48 in.
Answer: B
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Determine the symmetries of the curve.r = 6 sin 4?
A. x-axis only B. y-axis only C. x-axis, y-axis, origin D. No symmetry
Simplify. If an expression does not represent a real number, state this. 
A. not a real number B. -6.4 C. 2 D. -2
Solve the problem.It costs $42 per hour plus a flat fee of $16 for a plumber to make a house call. What is an equation of the form 
for this situation?
A. y = 42x + 16 B. y = 42x C. y = 16x D. y = 16x + 42
Three forces with magnitudes 70 pounds, 100 pounds and 20 pounds act on an object at angles 50°, -40°, and 110° respectively, with the positivex-axis. Find the direction and magnitude of the resultant force. (The choices below are given to two decimal places.) ?
A. 122.90 pounds at an angle of 85.94° with the positive x-axis B. 115.05 pounds at an angle of -4.06° with the positive x-axis C. 115.05 pounds at an angle of 85.94° with the positive x-axis D. 122.90 pounds at an angle of 4.06° with the positive x-axis E. 115.05 pounds at an angle of 4.06° with the positive x-axis