The product of two more than y and 7

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

Asap! i'm not good math and i'm lost.