### Instruction: Irene earns $500 if she works for 40 hours a week and gets an extra $20 for every hour of overtime. If she worked 50 hours last week, calculate her total income.### Response: If Irene worked 50 hours last week, the total number of hours counting as overtime is 50-40 = 10 hours.
For the 10 hours of overtime, Irene received an extra 20*10 = $200
Her total income for the week is $500+$200 = $700
The answer is 700