Answer :
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
According to above statement ~
- [tex]y = 16x + 45[/tex]
where,
- y = total money charged by electrician
- x = number of additional hour he/she works
so, let's plug the value of x as 4 hours to find y ( total money charged by the electrician )
that is ~
- [tex]y = (16 \times 4) + 45[/tex]
- [tex]y = 64 + 45[/tex]
- [tex]y = \$ \: 109[/tex]
So, you owe a total of $ 109 to the electrician ~