To find how much money Karen will earn after working 8 hours at the supermarket, we can multiply 8 hours by the $10.50 that is received as hourly pay. This would look like:
$10.50 • 8 hours = $84.00
In 8 hours, Karen earns $84.00.
Let x be the amount she will earn after working 8 hours
10.50 = 1 hour
X = 8 hours
cross multiply
X= 10.50 x 8
X =84
Therefore Karen will earn 84 after working for 8 hours
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