Which statement best describes how to determine whether f(x) = x4 – x3 is an even function?
determine whether (–x)4 – (–x)3 is equivalent to x4 – x3.
determine whether (–x4) – (–x3) is equivalent to x4 + x3.
determine whether (–x)4 – (–x)3 is equivalent to –(x4 – x3).
determine whether (–x4) – (–x3) is equivalent to –(x4 + x3).

The first option

Step-by-step explanation:

If 2 functions are even, then

f(x) = f(- x)

f(x) = - x³

f(- x) = - (- x)³ = + x³

Since f(x) ≠ f(- x) then f(x) is not an even function

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !