The Sun Spa charges annual dues of $125 plus $10 per hour to use the facilities. The Moon Spa charges annual dues of $230 plus $7 per hour to use the facilities. For what number of hours would the two spas charge the same total amount?
+676 $$125+10x=230+7x$$
$$3x=105$$
$$x=35$$
They need to work 35 Hours.
