Jadon wants to buy a new game system that costs $109, including tax. He currently has $15 saved. He
began a pet sitting service and charged $5 per dog.
What is the fewest number of dogs he would have to
watch to have enough money to buy the bike?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Is this a polynomial function? i need to know asap

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.