Ainsley thought there were 25 students in her math class, but there were actually 27 students. What is her percent error?

What expression is equivalent to 1/2(2+3x-6)

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base