Plz give me those answer..give me those answer. plz tomorrow i had a test..plz

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?

How many solutions does the nonlinear system of equations graphed below have?

Based on the diagrams, what is the value of x?