someone pls explain the math associated

BC has a health insurance with a premium of $200/ month and a $1000 deductible for all medical services and hospitalizations. The deductible does not apply to his office visits with doctors or his prescriptions. Visits to the primary care is a $10 copayment and specialists are $20 copayment. Once his deductible is met the medical services and hospitalizations are 100% covered. The insurance also covers medications on a tier copayment and coinsurance system. Tier 1 generics are $10/30 days Tier 2 preferred brand is $25/30 days Tier 3 non-preferred brand is $50/30 days Tier 4 specialty medications is 20% of cost. BC has COPD, hypertension, and dyslipidemia. His medications are: Lisinopril 10mg once daily for hypertension (Tier 1) Atorvastatin 80mg once daily for dyslipidemia (Tier 1) Spiriva Respimat 2 inhalations once daily (Tier 3) What will BC pay for 90 days supply of his medications? Full cost: $7.00/30 tablets Full cost: $8.00/30 tablets Full cost: $236.00/30 day