Answer:
[tex]f = 2.48[/tex]
Step-by-step explanation:
Step 1: Subtract 4.02 from both sides
[tex]f + 4.02 = 6.5[/tex]
[tex]f + 4.02 - 4.02 = 6.5 - 4.02[/tex]
[tex]f = 2.48[/tex]
Answer: [tex]f = 2.48[/tex]
Hope this helps! Let me know if you have any questions