What is the x coordinate of the point of intersection for 2x+y=7 & 10x-7y=-1

Louis wants to carpet the rectangular floor of his basement the basement has an area of 864 square feet the width of the basement is 2/3 its length what is the length of lewis's basement

Which expression is equal to (f+g)(x)?

Stefanie is painting her bedroom. she can paint 2 1/3 square feet in 4/5 of an hour. how many square feet can she paint in one hour?