Solve the problem.The cost c, in dollars, associated with fixing a computer is estimated by the equation 
, where x is the number of hours required of a certified repairman and y is the number of hours required of a software specialist. Find the cost of a repair for which a certified repairman worked 3 hours and a software specialist worked 6 hours.
A. $255
B. $205
C. $178
D. $195
Answer: D
Mathematics
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Express the number in scientific notation.590,000
A. 5.9 x 105 B. 5.9 x 10-6 C. 5.9 x 106 D. 5.9 x 10-5
Mathematics
Solve the equation.6x - 5x = 17
A. 0
B. - 
C. -17
D. 17
Mathematics
Solve using matrices.4x + 5y = 73x + 9y = 21
A. (3, -2) B. (-2, 3) C. (-2, -3) D. (3, 2)
Mathematics
Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics