Rosalina knitted 8 scarves for gifts. she used 38 feet of yarn for each scarf. how much did rosalina spend on the yarn?

Write an equation of the line given the two points below (write your equation in slope-intercept form, y=mx+b): (-4, 4) and (6, -4)

Use the graph of the sine function y=2sinθ shown below

How do you use the elimination method for this question? explain, because i really want to understand!