The table below shows how many coaches work with each of the major sports teams at Kristensen School. Although no single coach works with all three teams, 3 coaches work with both the Track and Tennis teams, 2 coaches work with both the Track and Baseball teams, and 1 coach works with both the Tennis and Baseball teams. How many different coaches work with these three teams?
Sports No of coaches
Track 8
Tennis 7
Baseball 4
Choose the most appropriate option.
A) 6	B) 9	C) 11	D) 13	E) 17
X = 8 + 7 + 4 - (3 + 2 + 1)= 
<gadget id="calculator">8 + 7 + 4 - (3 + 2 + 1)</gadget>
<output>13</output>
13   Answer is 13
<result>D</result>
The table below shows how many coaches work with each of the major sports teams at Kristensen School. Although no single coach works with all three teams, 3 coaches work with both the Track and Tennis teams, 2 coaches work with both the Track and Baseball teams, and 1 coach works with both the Tennis and Baseball teams. How many different coaches work with these three teams?
Sports No of coaches
Track 8
Tennis 7
Baseball 4