The equation that could she use to determine how many loaves of bread she sold is 0.80x - 30 = 58.
Since
Her expenses include a fee of $30 per day for a sales booth, and ingredients cost $0.80 per loaf of bread.
And, Morgan sold x loaves of bread for $3.00 each and made a profit of $58.00.
So here the equation be like 0.80x - 30 = 58.
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