Hello again Dan,

The following four formulae will get the equation parameters for you without having to transcribe them from the trend line equation.

=INDEX(LINEST(B3:B7,A3:A7^{1,2,3}),1)

=INDEX(LINEST(B3:B7,A3:A7^{1,2,3}),2)

=INDEX(LINEST(B3:B7,A3:A7^{1,2,3}),1,3)

=INDEX(LINEST(B3:B7,A3:A7^{1,2,3}),1,4)

Regards

Harry