Answer:
[tex]t = -3.5 + 1.75f[/tex]
[tex]f=\frac{4}{7} t+2[/tex]
Solution:
[tex]4t + 20 = 7f + 6[/tex]
[tex]4t = 6 + -20 + 7f[/tex]
[tex]4t = -14 + 7f[/tex]
[tex]t = -3.5 + 1.75f[/tex]
[tex]7f=4t+20-6[/tex]
[tex]7f=4t+14[/tex]
[tex]f=\frac{4}{7} t+2[/tex]
