Determine if the given ordered triple is a solution of the system.3x + 4y + z = 95x - 5y - z = -305x + y + 2z = -15(-2, 5, -5)
A. No
B. Yes
Answer: B
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Write the series in summation notation. Use the index i and let i begin at 1 in each summation.-2 + 3 - 4 + 5 - 6 + 7
A. 
B. 
C. 
D. 
Solve the formula for the indicated variable. Then use the supplied values to solve the equation.The relationship between the distance p from an object to a lens, the distance q from the image to the lens, and the focal length f (the distance from the lens to the principal focus) is given by 
Solve for f. What is the focal length when p is 726 mm and q is 24.2 mm? (All values are approximate.)
A. f = p + q = 750 mm
B. f = 
+ 
= 1.00 mm
C. f = 
= 23.4 mm
D. f = pq - p - q = 16,800 mm
Graph the equation by plotting points. Use values of ? that are multiples of 30°.r = -6 cos ?
A. 
B. 
C. 
D. 
Name the quadrant in which the angle ? lies.csc ? > 0, sec ? > 0
A. I B. II C. III D. IV