Simplify the given expression. Write the answer with variables in alphabetical order and any constant term last.11s + 12t + 15s
A. 
s + 12t
B. 26s2 + 12t
C. 26s + 12t
D. 23t + 15s
Answer: C
Mathematics
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Solve the quadratic equation by completing the square.x2 + 4x = 3
A. {-2 ± 
}
B. {-2 ± 2
}
C. {2 ± 
}
D. {-1 ± 
}
Mathematics
For the given functions f and g, find the requested function and state its domain. Write the domain in interval notation.f(x) = 9x - 2; g(x) = 5x - 4;
Find f ? g.
A. (f ? g)(x) = 14x2 - 46x - 6; (-?, ?) B. (f ? g)(x) = 45x2 - 14x + 8; (-?, 8) ? (8, ?) C. (f ? g)(x) = 45x2 + 8; (-?, 8) ? (8, ?) D. (f ? g)(x) = 45x2 - 46x + 8; (-?, ?)
Mathematics
Find the present value. Round to the nearest cent.To get $2000 after 9 years at 8% compounded semiannually
A. $1026.75 B. $1012.74 C. $987.26 D. $1000.50
Mathematics
Determine whether the matrices are inverses. 
, 
A. Yes B. No
Mathematics