If 4k is Multiplied by 5 what does it make

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

Pranza plotted point a in the coordinate plane below.

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14