There are four lunch choices in a school cafeteria: salad, pizza, spaghetti and sub sandwiches. the percentage of students that chose salad is 15% if 45 students choose salad how many students ate lunch

After applying the composition r0.90 ry to rs what are the coordinates of r' and s'? a.r'(–3, 1),  s'(–3, 5)b.r'(–1, 3),  s'(–5, 3)c.r'(1, 3),  s'(5, 3)d.r'(5, 3),  s'(1, 3)

Ahomeowner plans to hang wallpaper on one wall of a bedroom that is 10 feet long if a stripe of wallpaper is 20 inches wide and stripes or hung vertically how many stripes on wall paper with the homeowner required

I'm confused on this could anyone me and show me what i need to do to solve it.