(-170).6 so is the answer positive or negative

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

Vanessa earns a base salary of $400.00 every week with an additional5% commission on everything she sells. vanessa sold $1650.00 worth of items last week.

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120