If θ is an angle in standard position and its terminal side passes through the point (21,20), find the exact value of \cos\thetacosθ in simplest radical form.

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Steve had 48 chocolates but he decided to give 8 chocolats to each of his f coworkers. how many chocolates does steve have left