Answer:
Explanation:
Typically you see f(x)=something like you do up in the original equation.
that is your function/graph.
a) f(0) means plug in 0 for x
f(0) = (-0)³-0²-0+13
f(0) = 13
b) f(2) =(-2)³-2²-2+13 >simplify the exponenents first
(-2)³ = (-2)(-2)(-2)= -8
f(2) = -8-4-2+13 >simplify work from left to right
f(2) = -12-2+13
f(2) = -14+13
f(2) = -1
c) f(-2) = [-(-2)]³-(-2)²-(-2)+13 >multiply - and - for (-(-2))³
f(-2) = (2)³-(-2)²-(-2)+13 >simplify exponents
f(-2) = 8-4-(-2)+13
f(-2) = 4-(-2)+13
f(-2) = 6+13
f(-2) = 18
d) means add f(1) and f(-1)
f(1) +f(-1) = (-1)³-1²-1+13 +[-(-1)]³-(-1)²-(-1)+13
f(1) +f(-1) = -1-1-1+13 +[1]³-1-(-1)+13
f(1) +f(-1) = -1-1-1+13 +1-1+1+13
f(1) +f(-1) = -2-1+13 +1-1+1+13
f(1) +f(-1) = -3 +13 +1-1+1+13
f(1) +f(-1) = 10+1-1+1+13
f(1) +f(-1) = 11 -1+1+13
f(1) +f(-1) = 10 +1 +13
f(1) +f(-1) = 24