If f(x) = 5x - 3, find x = 21. 72. 43. -44. -5

The function is given as;
[tex]f(x)=5x-3[/tex]When the value of x = 2, ten the input of the function becomes;
[tex]\begin{gathered} f(x)=f(2) \\ \text{This means we shall insert 2 into the function instead of x} \end{gathered}[/tex][tex]\begin{gathered} f(x)=5x-3 \\ f(2)=5(2)-3 \\ f(2)=10-3 \\ f(2)=7 \end{gathered}[/tex]The answer is 7