4times 1 3/5 , write answers as a mixed number

1/3(x-10)=-4 solve for x with steps

What is this inequality notation? t is less then or equal to 2

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?