ANSWER
[tex]15[/tex]EXPLANATION
We want to evaluate the expression given:
[tex]\lbrack p-25\rbrack+pf[/tex]for:
[tex]p=10;f=3[/tex]To do this, we substitute the values of p and f into the expression and simplify it:
[tex]\begin{gathered} \lbrack10-25\rbrack+(10\cdot3) \\ -15+30 \\ \Rightarrow15 \end{gathered}[/tex]That is the answer.