27 + 22m ≥ 129.99
this is because ravi needs AT LEAST $129.99. (it could be = too if thats an option, but you said inequality so i think its this!!)
ravi already has $27, and he just needs to charge music lessons to get the rest, which is $22 per m (music lesson).
so, 27 + 22m ≥ 129.99!!
i hope this helps!! im sorry im bad at explaining things! <33