The graph representing the situation is required.
Option B is correct.
Let time Misha plays guitar be [tex]x[/tex]
and time Misha uses computer be [tex]y[/tex]
Total time for playing guitar and using computer is 45 minutes or less.
[tex]x+y\leq 45[/tex]
At least 15 minutes the guitar is played
[tex]x\geq 15[/tex]
Two points of the first equation will be
[tex](0,45)[/tex] and [tex](45,0)[/tex]
Draw a line through them.
The shaded region will be below the line.
The second equation will be a vertical line at [tex](15,0)[/tex].
The shaded region will be towards the right of this line.
The intersection of these two regions will be the solution set.
So, Option B is correct.
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