Evaluate x+3xy - 2y for x= 4 and y

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 multiplicative rate of change of the exponential function shown on the graph?

What’s the range cuz i can’t find it?