Translate the problem to a system of equations, then solve using Cramer's Rule.The sum of a student's three scores is 218. If the first is 22 points more than the second, and the sum of the first two is 14 more than twice the third, what was the first score?
A. 46
B. 68
C. 86
D. 64
Answer: C
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Evaluate the given double integral by changing it to an iterated integral.
S is the region bounded by the x-axis, the line 
and the curve 
A. 10 B. 8 C. 9 D. 1
Solve the problem.A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only one-fifth as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thickness of the frame.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Solve the differential equation.
= e4x - 4y
A. y = 4e4x + C
B. y = 
ln (e4x + C)
C. y = 4ln (e4x + C)
D. y = ln (e4x + C)
Add.Add 1.665 and 3.4.
A. 5.055 B. 5.175 C. 5.066 D. 5.065