Question 907706
Monthly revenue goes this way:

(clients)*(membershipRate)
1700*44
(1700-7)*(44+1)
(1700-7-7)(44+1+1)
(1700-7x)(44+x)


Let x = dollar increase in membership monthly rate, and the monthly revenue is {{{highlight_green((1700-7x)(44+x))}}} and the domain must be whole numbers.  The function definition will be a parabola with a maximum.  My solution response stops here unless you find more difficulty with this.