Rodrigo is starting his own part time business. he plans to earn $25 per hour. he has the following expenses each month, $750 for overhead, $110 for phone and fax and $75 for materials. a. write an equality that describes the number of hours h he must work to earn a profit of $625. b. how many hours should he have worked to earn a profit of at least $625?

The equality that describes the number of hours h he must work to earn a profit of $625 is h = 62.4 hours and The inequality that describes the number of hours h he must work to earn a profit of atleast $625 is and this can be determine by using arithmetic operations.

Given :

a). Let the total number of hours be 'h'. The equality that describes the number of hours Rodrigo needs to work to earn a profit of $625 is given by:

25h - (750 + 110 + 75) = 625

25h = 1560

h = 62.4 hours

b). Then the inequality that describes the number of hours Rodrigo needs to work to earn a profit of atleast $625. is given by:

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