Find the area of the trapezoid where a and b are the lengths of the bases and h is the perpendicular distance between the bases.Let a = 
inches, b = 
inches, and h = 
style="vertical-align:-1px;" varid="variable_id_field" variablename="impvar_754392bf313e4f6093a134b12" class="wirisformula" /> inches.
A. Area = 980 in 2
B. Area = 16,800 in 2
C. Area = 1,092 in 2
D. Area = 8,400 in 2
E. Area = 440 in 2
Answer: A
Mathematics
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Solve the problem.A formula for the focal length of a lens is f = 
. Calculate f (the focal length) for a = 14 cm and 
Round to the nearest tenth.
A. 6.7 cm B. 6.5 cm C. 7.3 cm D. 7.0 cm
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Graph the linear equation.-3x + y = 0
A. 
B. 
C. 
D. 
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Graph the system of inequalities.y > 1x ? 2
A. 
B. 
C. 
D. 
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