Solve the problem.The intensity L(x) of light x ft beneath the surface of a lake satisfies the differential equation 
. At what depth, to the nearest foot, is the intensity one tenth the intensity at the surface?
A. 29 ft
B. 14 ft
C. 19 ft
D. 43 ft
Answer: A
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A researcher's annual take home pay is $53,000. Her monthly loan payment on her condominium is $1049.00. She also pays $106 per month in condo fees. Find what remains at the end of the year after these expenses are paid.
A. $40,412 B. $41,684 C. $39,140 D. $51,845
For problems 8-12 use elimination to solve the system of equations.
A. 
B. 
C. 
D. infinitely many solutions
E. no solution
Use the quadratic formula to find the exact solutions.x2 + 35 = 5x
A. 
± 
i
B. 0, 5
C. 
± 
i
D. -5, 5
Find the perimeter or area of the figure as indicated. Express your answer in simplified radical form.Find the area of the trapezoid given that its height is 2
m and the lengths of its bases are 
m and 
m.
A. (10 + 2
) sq m
B. (10 + 4
) sq m
C. 20 sq m
D. (100 + 2
) sq m