Grade 12 solutions please, thanks

6. Given that log a + log b = 3, determine all the possible integer values of a if b is also an integer value. Explain your reasoning 7. The total number of cases of COVID19 in Canada as of May 3 was 55572** Use the mathematical model below, where N(t) is the total number of cases t days in the future, and No is the number of current cases. I N(t)=No(1+GrowthRate) a) If the GrowthRate 5% per day when will the number of cases double (assuming that the GrowthRate remains constant) ? b) If the GrowthRate is 0.5% per day, when will the number of cases double(assuming that the GrowthRate remains constant)