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a) for the function f(x) = 3x + 8/x find the net change between x=1 and...

a) for the function f(x) = 3x + 8/x
find the net change between x=1 and x= 4
find the average rate of change between x=2 anf x=8

b) combine log expression
1/2 logx + 3 log y -4logz

c) solve the log equation
log base 6(x+9) + log base 6 ( x-7) =2
Math   Precalculus   
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