for questions 4 & 5

3x = 729 solve for x plz . it's urgent. will mark

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?

The number of volunteers to walk dogs at the local animal shelter last year was 20. this year, the number of volunteers has risen to 50. what is the percent of increase in the number of volunteers?