Answer :
You could have found the answer in less time than it took you to post the question.
-- Jessica's hourly rate is $7.50 per hour for the first 40 hours,
-- It's (1.5 x $7.50) for each hour over 40 hours.
-- Jessica earned (40 x $7.50) for the first 40 hours.
-- She earned (1.5 x $7.50) for each of the next 8 hours.
First multiplyum, then addum up.
-- Jessica's hourly rate is $7.50 per hour for the first 40 hours,
-- It's (1.5 x $7.50) for each hour over 40 hours.
-- Jessica earned (40 x $7.50) for the first 40 hours.
-- She earned (1.5 x $7.50) for each of the next 8 hours.
First multiplyum, then addum up.