Let g represent the total number of hours greg will travel on his trip across the country to attend his cousins wedding. the first day he travels 8 hours. the second day he travels 9 hours. the third day he had mechanical problems and only drove 4 hours. write and algebraic expression to represent how much time he has left to drive.

g-21

Step-by-step explanation:

First you would want to add all of the hours traveled already. Since g would be the total amount of house that Greg would need to drive to get to his destination you would subtract the amount of hours traveled from g. 8+9+4=21, 21 hours traveled already. The expression would be g-21.

I think it would be g-(8+9+4).

Simplified form: g-21

10% of increase is the final answer! : )