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lesya692 [45]
3 years ago
6

alex worked at the library 4 hours each night for 20 nights. he earned a total of $640. how much did he earn per hour working at

the library?
Mathematics
1 answer:
bazaltina [42]3 years ago
4 0
He earned $8 an hour. I hope this helped!
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Sue's Sushi placed two orders with its fish supplier. One order was for 11 pounds of salmon and 6 pounds of tuna; the order tota
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Hi there

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Here's why.

X will be the cost of pound of salmon, and y will be the cost of a pound of tuna.
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So, again...
1lb Salmon : $13
1lb Tuna : $8
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