Name all sets of numbers to which each real number belongs

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

What situation is an example of an observational study

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x