Provide an appropriate response.Solving for which variable in which equation involves the least amount of work? 2x = 4x - 7y = 30
A. x in equation 1
B. y in equation 1
C. y in equation 2
D. x in equation 2
Answer: A
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Find the power of i.i9
A. -1 B. 1 C. -i D. i
Solve the equation by factoring.(x + 7)(x - 4) = -10
A. {-7, 4} B. {3, 6} C. {-6, 3} D. {7, -4}
The table shows, for some particular year, a listing of several income levels and, for each level, the proportion of the population in the level and the probability that a person in that level bought a new car during the year. Given that one of the people who bought a new car during that year is randomly selected, find the probability that that person was in the indicated income category. Round your answer to the nearest hundredth. 
$50,000 and over
A. 0.28 B. 0.24 C. 0.22 D. 0.25
Solve the equation by completing the square.8x2 + 24x = -15
A. 
, 
B. 
, 
C. 
, 
D. 
, 