Answer:
6+3(f)=18
6+3f=18
3f=12
f=4
Step-by-step explanation:
107km per hour
It is too much to explain but if you need one then reply back and I will explain it for you
The second one:
3^7 x 3^(86/10) x 3^(9/1000)
That is because when you multiply powers with the same base ( in this case they are all 3), you just leave the base as it is and add the exponents
so it is basically 3^(7 + 86/100 + 9/1000) which is 3^7.869
Answer: the answer is u 
2
