Solve the problem.Let f(x,y) = ln (x2 + y2). Which one of the following curves is a simple closed path in the domain of the function f?
A. The unit circle (x - 5)2 + y2 = 1
B. The ellipse 
+ 
= 1
C. The rectangle with vertices at (-3, 2), (3, 2), (3, -2), and (-3, -2)
D. The unit circle x2 + y2 = 1
Answer: A
Mathematics
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Solve the application and answer with a complete sentence.Pete studied 18
hours for his history test. Mike studied 4
hours for the same test. How much longer did Pete study than Mike?
A. Pete studied 13
hours more than Mike.
B. Pete studied 13
hours more than Mike.
C. Pete studied 13
hours more than Mike.
D. Pete studied 14
hours more than Mike.
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Divide.24 ÷ 6
A. 4 B. -3 C. -4 D. 5
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Round the decimal to the given place value.15.3654 (thousandths)
A. 15.375 B. 15.365 C. 15.355
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Graph the function.f(x) = 2.773x
A. 
B. 
C. 
D. 
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