please put the answers clear as possible, just give me the answers, thank you.

90 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 11 0.1222 11 8 0.0889 19 2 16 0.1778 35 3 12 47 4 14 0.1556 61 5 0.1111 71 6 11 0.1222 7 B 0.0889 90 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 7 times per week