I would like some help with these two questions.. uhh here's 30 points if you answer it right

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

What is the area of a triangle with a base of 7x and height of 8x expressed as a monomial? question 5 options: 1x 15x2 28x2 56x2