Danielle works as a cashier in a book store. she works 35 hours a week and earns $11 an hour. each week danielle spends $300 and saves the rest. danielle estimated that she earns about $20,000 per year. is this estimate accurate

She earns $385 a week 
35 x 11= 385

if she spends 300 shes left with 85 dollars 

now  if we count the 300 dollars in our estimation 
385 x 4= 1,540 so she earns a 1,540 a month 

1,540 x 12= 18,480
so this means she earns right around $18,480 a year

 If we don't include the 300  she would earn 
85 x 4= 340 a month 

340 x 12= 4,080 a year 

i hope this helps XD