Which statement best describes how to determine whether f(x) = x3 + 5x + 1 is an even function?
determine whether –(x3 + 5x + 1) is equivalent to x3 + 5x + 1.
determine whether (–x)3 + 5(–x) + 1 is equivalent to x3 + 5x + 1.
determine whether –x3 + 5x + 1 is equivalent to –(x3 + 5x + 1).
determine whether (–x)3 + 5(–x) + 1 is equivalent to –(x3 + 5x + 1).

Can someone me out here number 4 plz

Jenny invests $2,000 at an interest rate of 5%. the amount of money, me, in jenny's account after tyears can be represented using the equation ma-2000(1.05). if jenny would have invested the same amount of money at the same interest rate four years ago, the equation representing the amount of money mo. in her account would be represented using the equation! mg = 2000(105)*** which of the following is equivalent to mp? 2000(105) om- 1.05 2000(1.05) mo 1059 mp-2000(1.05) (105) mp - 2000(1.05) + (1.05)

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )