The clown costs $100 plus an additional $20 per hour, so the total cost for h hours is:
Cost of clown = $100 + $20/hour x h hours
Cost of clown = $100 + $20h
Similarly, the magician costs $120 plus an additional $30 per hour, so the total cost for h hours is:
Cost of magician = $120 + $30/hour x h hours
Cost of magician = $120 + $30h
To find the total cost of both performers, we can simply add the cost of the clown and the cost of the magician:
Total cost = Cost of clown + Cost of magician
Total cost = ($100 + $20h) + ($120 + $30h)
Total cost = $220 + $50h
So the total cost of both performers for h hours is $220 + $50h.