Solve the system by graphing.2x + y = 2 x + 6y = -21
A. (3, 2)
B. (3, -4)
C. (-3, -4)
D. (-1, 4)
Answer: B
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At what points is the given function continuous?f(x, y) = 
A. All (x, y) such that x ? y B. All (x, y) C. All (x, y) ? (0, 0) D. All (x, y) such that x ? - y
By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = 
A. L = ln 2, N = 6 B. L = ln 4, N = 8 C. L = 0, N = 8 D. diverges
Solve the problem.The intensity I of light decreases from its value I0 as it passes a distance x through a medium. Given that 
where k is a constant depending on the medium, find x for 
and 
A. 2.690 cm B. 0.598 cm C. 1.83 cm D. -2.690 cm
Divide and write answer in lowest terms.1
÷ 
A. 5
B. 4
C. 6
D. 3