Which statement best describes how to determine whether f(x) = x3 + 5x + 1 is an even function?

a. determine whether –(x3 + 5x + 1) is equivalent to x3 + 5x + 1.
b. determine whether (–x)3 + 5(–x) + 1 is equivalent to x3 + 5x + 1.
c. determine whether –x3 + 5x + 1 is equivalent to –(x3 + 5x + 1).
d. determine whether (–x)3 + 5(–x) + 1 is equivalent to –(x3 + 5x + 1).

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3