If f(x)=69-15x then 
Given :

Lets find out
. The steps to find out f inverse are
Replace f(x) by y

Now we find 
Replace inverse function in the place of x in f(x)

Learn more :
brainly.com/question/11242094
C) 18 is your answer
Hope this brings you luck ^o^ ^_^
3.54x10 to the 5th is the standard notation for 0.00000354
4g and 6b and that's a total of 10 in all so you know it will be 1/2 if its going to be two out of two
<span>0=10, which is " never true" , and this leads to " no solution" also</span>