At what points is the given function continuous?f(x, y) = 
A. All (x, y) such that 7x + 8y ? 0
B. All (x, y) such that 7x + 8y ? 0
C. All (x, y)
D. All (x, y) such that x + y ? 0
Answer: A
Mathematics
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Find the function value.Let f(x) = e3x. Find f(-0.50), rounded to four decimal places.
A. -0.3502 B. 0.3502 C. -0.2231 D. 0.2231
Mathematics
Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 - 8x = 15
A. {4 ± 
}
B. {8 ± 
}
C. {4 ± 
}
D. {-4 ± 
}
Mathematics
Match the given function to its graph.1) y = sin (x - 
)2) y = cos (x + 
)3) y = sin (x + 
)4) y = cos (x - 
)A B
0.0px;" height="201" width="200" />C D
A. 1A, 2D, 3C, 4B
B. 1C, 2A, 3B, 4D
C. 1A, 2B, 3C, 4D
D. 1B, 2D, 3C, 4A
Mathematics
Rationalize the denominator and simplify. Assume that variables represent positive values.
A. 
B. 
- 
C. 
D. 
Mathematics