Cual es la raiz cuadrada de 3X

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

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

The cost for an uberi is $2.50 plus $2.00 mile. if the total for the uber ride was $32.50, how many miles did the customer travel?