Write the unit digit of denominator of (x+y)*z where x = -4/3 y =1/2 z= -7/5 plz help

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.