Practice problem
Let f(x)=ax7+bx3+cx−5f(x) = ax^7 + bx^3 + cx - 5f(x)=ax7+bx3+cx−5, where a,b,ca,b,ca,b,c are some real numbers. If f(−7)=7f(-7) = 7f(−7)=7, what is the value of f(7)f(7)f(7)?
Source: AHSME 1982
-17
-14
-8
-2
Type a concept, like “slope” or “photosynthesis”.
