Perform the indicated operation. Write the answer in standard form.(2 + 7i)2
A. 53 + 28i
B. 4 + 28i + 49i2
C. -45 + 28i
D. -45
Answer: C
Mathematics
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Evaluate the expression.The expression (rule) for finding the total time for a commuting trip is d + 15 where d is the normal driving time and 15 is the number of minutes added to allow for delays. Find the total commuting time when the normal driving time is 49 minutes.
A. 98 min B. 49 min C. 64 min D. 34 min
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Find the value of the limit.
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Multiply. Simplify if possible.150 ? 
A. 90 B. 200 C. 120 D. 150
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Solve the equation.52s + 30 = 12s
A. 
B. 
C. 
D. 
Mathematics