can someone help, how do I solve this?

Answer:
you need to first figure out the equation f.
it says that 18=2/5f, so why don't we use inverse operation and multiply 18 by 5/2. and the answer would be....
Step-by-step explanation:
Answer:
f=45
Step-by-step explanation:
[tex]18 \div \frac{2}{5} = f[/tex]
ehoch results in f=45