Are the triangles similar? If so, why?

What is the range of the data below? .8090100

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

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"