Please help me with question

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.