1h = $18.25
a) She works 40 hours per week and for one hour she makes $18.25, so in order to find out her weekly income you need to multiply $18.25 by 40.
$18.25 × 40 = $730
Her weekly income is $730 if she works 40 hours per week.
b) She makes $730 a week and there are 52 weeks in a year, so in order to find out her yearly income you need to multiply $730 by 52.
$730 × 52 = $37 960
Her yearly income is $37 960 if she works 40 hours per week for 52 weeks.
There you go! I really hope this helped, if there's anything just let me know! :)