What is the distance between 17 and 31 on a number line

At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.

Which is the standard form for this number? (2 x 10) + (5 x 1) + (8 x 1 10,000 )

The length of segment xy is 9 cm. which statements regarding triangle xyz are correct? check all that apply. yz = 9 cm xz = 9 cm xz = cm xz = 2(xy) yz is the longest segment in △xyz.