Question

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

Answer 1

The function is given as;

`f(x)=5x-3`

When the value of x = 2, ten the input of the function becomes;

`\begin{gathered} f(x)=f(2) \\ \text{This means we shall insert 2 into the function instead of x} \end{gathered}`
`\begin{gathered} f(x)=5x-3 \\ f(2)=5(2)-3 \\ f(2)=10-3 \\ f(2)=7 \end{gathered}`

The answer is 7