17+3-5x7=? Help please and answer my other questions pleaseee

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Atriangle has verticals at b(-3,0), c(2,-1), d(-1,2). which transformation would produce an image with verticals b”(-2,1), c”(3,2), d”(0,-1)?