Brainiest to whoever right it’s easy

Based on what i know about mean, this doesn't add up.

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

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