I need help with #7 and #8 please. thank you!

7. DETAILS BRECMBC9 10.11.008. 0/1 Submissions Used Compute the rate (in %) for the loan. Round answers to the nearest tenth of a percent; use ordinary Interest when time is stated in days. Principal Rate(%) Time Interest $4,000 % 2 years $720 Show My Work (Optana) 8. DETAILS BRECMBC9 10.11.016. 0/1 Submissions Used Use the ordinary interest method to compute the time (in days) for the loan Round your answer up to the next highest day when necessary. Principal Rate(%) Time Interest $7,800 10.4 days $225