Use the definition of equality of complex numbers to find the real numbers x and y such that the equation is true.x - 5i = 7 + yi
A. x = 7, y = 5
B. x = -7, y = 12
C. x = 7, y = -5
D. x = -7, y = -2
Answer: C
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Solve the equation.49x3 - x = 0
A. 
B. 
, - 
, 0
C. 
, 0
D. - 
Solve the problem.The formula C = 2x + 17 represents the estimated future cost of yearly attendance at State University, where C is the cost in thousands of dollars x years after 2002. Use a compound inequality to determine when the attendance costs will range from 35 to 43 thousand dollars.
A. From 2011 to 2015 B. From 2012 to 2016 C. From 2012 to 2014 D. From 2010 to 2014
Provide an appropriate response.The control center was suddenly unable to track the satellite when it reached a distance of 128,615 miles from the earth's surface. Write this whole number in word form.
A. Six hundred fifteen thousand, one hundred twenty-eight B. One hundred twenty-eight million, six hundred fifteen C. One hundred twenty thousand, eighty-six hundred, fifteen D. One hundred twenty-eight thousand, six hundred fifteen
Evaluate the expression or indicate that the root is not a real number.
A. 
B. 169
C. 13
D. 17