Answer:f=3
Step-by-step explanation:
If you do 3*3 which is 9 then 3f+1=10
Answer:
3f = 9
[tex]3f + 1 = 10 \\ 3f = 10 - 1 \\ 3f = 9 \\ f = \frac{9}{3} \\ f = 3[/tex]
