Let\(f(x) = \left\{ \begin{array}{cl} x^2+1 &\text{ if }x>5, \\ 2x-3 &\text{ if } -5 \le x \le 5, \\ 3 &\text{ if } x <-5. \end{array} \right.\)Find \(f(-7)+f(0)+f(7).\)
f(-7) = 3 from the definition
f(0) = 2(0) -3 = -3
f(7) = 72 + 1 sum = 50