If (x^2)+1/(x^2)=7, and x is not 0,find the value of:
(7x^3) + 8x - (7/x^3) - (8/x)

The longer leg of a 30-60-90 trangle is 18

Trying to figure out the standard form equation for this graph

At the beginning of the month, alexa’s bank account contained $4329.97. she then made two deposits of $452.28 each and a withdrawal of $279.34. she then went to the store and bought the new iphone x for $1,015 plus 6% sales tax. how much money does she have in her account now?