Write the expression in the standard form a + bi.
4
A. - 
+ 
i
B. - 
- 
i
C. - 
- 
i
D. - 
+ 
i
Answer: C
Mathematics
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Solve the formula for the specified variable.a + b = s + r for r
A. r = 
+ b
B. r = a + b - s
C. r = 
D. r = s(a + b)
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Find the axis, domain, and range of the parabola.f(x) = -3x2 + 12x - 10
A. axis: x = 2 domain: (-?, ?) range: (-?, 2] B. axis: x = 4 domain: [2, ?) range: (-?, ?) C. axis: x = 4 domain: (-?, 2] range: (-?, ?) D. axis: x = 2 domain: (-?, ?) range: [2, ?)
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Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 6m - 7
D. 
Mathematics
Identify whether the equation is a linear equation in two variables. Answer "is" or "is not."x-2 - 5y = 7
A. is B. is not
Mathematics