Answer:
JoAnn worked for the week = 45 hours
Step-by-step explanation:
JoAnn paid $13.50 an hour for the first 35 hours each week.
$20.25 each hour after 35 hours.
The equation is
35*13.50 +20.25x = 675, where "x" represents the number of hours she worked after 35 hours.
472.50 + 20.25x = 675
20.25x = 675 - 472.50
20.25x = 202.50
x = 202.50/20.25
x = 10
JoAnn worked for the week = 35 + 10 hours
JoAnn worked for the week = 45 hours.
That's the answer.
Hope you will understand the concept.
Thank you.