With number one! i’m stressed because i haven’t been passing my tests lately and i just don’t understand the information

The relative growth rate for a certain type of fungi is 60% per hour.a small culture has formed and in just 6 hours the count shows to be 20,273 fungi in the culture.what is the initial number of fungi in the culture?

Lines de and ab intersect at point c what is the value x? a.12b.25c.38d.52

The exponent on a when a^2 is multiplied by a^5 is a.3 b.7 c.10