duncan uses 6 centimeters of tape for every present he wraps. How many presents did Duncan wrap if he used 42 centimeters of tape?

∆red ≅ ∆ by rule will give brainiest if possible

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.