Solve the equation.x2 = -4
A. ±
B. ±2
C. ±i
D. ±2i
Answer: D
Mathematics
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Find a linear function whose graph has the given slope and y-intercept.Slope - 
, y-intercept 
A. f(x) = 
x + 
B. f(x) = - 
x + 
C. f(x) = 
x - 
D. f(x) = - 
x - 
Mathematics
Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places. 
A. 
? 9.899
B. 7
C. 14
D. 
? 12.124
Mathematics
Solve the equation.(5y + 21)(7y + 29) = 0
A. {- 
, - 
}
B. {- 
, - 
}
C. {
, 
}
D. {16, 22}
Mathematics
Evaluate the logarithm without the use of a calculator.log6 216
A. 216 B. 6 C. 3 D. 18
Mathematics