Please anybody I really need help? ..

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

What is 0.000008 meters in scientific notation

Which verbal expression best describes the algebraic expression 3x ÷ 5? the quotient of three times some number and five the product of some number and five divided by three the quotient of three and some number times five the sum of three and some number divided by five