C) six times log base two of x times seven times log base two of y minus log base two of eight.
He needs to work 22 hours :)
See attached picture for the answers:
Answer:
21
Step-by-step explanation:
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Answer:
xy+2x+3y+6=xy-5 .............(1)
xy-3x+2y-6=xy.....,.,(2)
2x+3y=-11
-4x+2y=6
first equation multiply by 2
(2)*(2x+3y)=-11
4x+6y=-22
-4x+2y=6
8y=-16 y=(-2),,,,, x=(-2,5)
