hi! can i please get help for this question?

Rock Mountain Inc. entered into a financial lease with Mamamu Leasing. The lease payments are $9,000 per year for 10 years, payable at the beginning of the year. The lease agreement includes maintenance and servicing. Rock Mountains capital structure is 40% debt and 60% equity with cost of equity, rs of 8%. The companys WACC and tax rate are 7% and 35%, respectively. What is the cost of the lease at the start of the lease arrangement (i.e., t = 0)?