Answer:
8 hours
Step-by-step explanation:
Let x = the hours she work
Equation-
1. 20x + 12 = 172
2. - 12 - 12
20x = 160
3. /20 /20
4. x= 8 hours
1. Write out the equation
2. subtract 12 from both sides
3. Divide 20 on both sides
4. Your answer is 8 hours
She should come to work on time and work at least 8 hours to earn $ 172 a day.
Given that a computer engineer is paid $ 20 per hour and $ 12 for coming to work on time, to determine how many hours must she work to earn a minimum of $ 172, the following calculation must be performed:
Therefore, she should come to work on time and work at least 8 hours to earn $ 172 a day.
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