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The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

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?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?