To calculate Halie's straight time pay for the two weeks, you can use the following formula:
Straight Time Pay = (Hourly Rate) * (Total Hours Worked)
Halie's hourly rate is $19.75, and she worked a total of 18 hours last week and 20 hours this week.
For the two weeks:
Straight Time Pay = ($19.75/hour) * (18 hours + 20 hours)
= $19.75 * 38
= $751.50
So, Halie's straight time pay for the two weeks is $751.50.