1.) use two circle's intersection is 6 then minus 23 with 6 same with 28
a. 17
b. 6
c. 32
d. 15
e. 45
2.) use three circles intersection of all is 2 guitar intersection Piano is 5 guitar intersection violin is 3. Add 5,2, and 3 then minus 30. add 5 and 2 then minus 23. Add 3 and 2 then minus 15
