How would i find the slope intercept form of x+y+3=0?

Which graph represents the following piecewise defined function?

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60