Hi yal
like costum

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.

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Is a positive integer raised to a negative power always positive