Question 511904
Set up the two cost equations, 1. for renting clubs and 2. for buying clubs.
1) {{{C[1] = 22r+8r}}} "...charges $22 per round (r) of golf plus $8 for renting the clubs."
2) {{{c[2] = 22r+160}}} "...charges $22 per round of golf  plus you pay $160 for your own clubs."
You want {{{C[2] < C[1]}}} The cost of purchasing clubs to be less than the cost of renting clubs.
{{{22r+160 < 22r+8r}}} Simplify.
{{{22r+160 < 30r}}} Subtract 22r from both sides.
{{{160 < 8r}}} Divide both sides by 8.
{{{20 < r}}} or {{{r > 20}}}
You must play more than 20 rounds in order for the cost of purchasing your own clubs to be less than the cost of renting clubs.