A bottle of shampoo was originally priced at $3.50. With a sale, it was reduced to $2.80. What is the percent change?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.