What type of observation is this?

The cheese looks furry.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

What would the rule be for the reflection of y=-3