Need help please thanks

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

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 it's length. what is the length of louis's basement