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Step-by-step explanation:
B.
[tex] \\ \frac{112}{2} = 56 \\ [/tex]
[tex] \\ < cf = 64[/tex]
[tex] \\ \\ fm = 23[/tex]
[tex] \\ \\ x = 18.02[/tex]
C.
Highest Frequency is 56-62.
XLB=55.5
i=7
x=15.05
*that's it.