using the equation VT(power n) = C

cuttin speed tool life

180m/min 30

250m/min 12

v1=180

t1=30

v2=250

t2=12

logv1+logt1=log c

logv2+logt2=log c

log180+nlog30

log250+nlog12

2.255+n1.477

-2.397+n1.079

=-0.142+n-0.602=0

n=0.602 = 0.142

0.142

0.602

=0.235

180+0.235x1.477=180.3470

is this the end of the equation?