Firstly this looks like translated log function graph
log1=0
As per graph the graph is pulled some inwards y axis but little bit
Usually log x leaves y axis at -1 but here it leaves at +2
So
y axis is moved upwards (+3)
Last function
3a^2 * 2a^3 = 6a^5
because 3 x 2 = 6.....and a^2 * a^3 = a^(2 + 3) = a^5
put it all together and u get 6a^5
Answer: 15 inches
Explanation:
The equation would be 60-45=15