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Mathematics, 29.08.2019 15:30 reagan23b

Josefina works between 10 and 30 hours per week at a pizzeria. she earns $6.50 an hour, but can earn tips when she delivers pizza.
a) write a system of inequalitites to represent the dollars 'd' she could earn for 'h' hours in a week.
b) if josefina recieved $17.50 in tips and earned a total of $180 for the week, how many hours did she work?

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