How I can write 680,705 in expanded form

In 2009, the population of a country passed the 307.5 million marker. The total area of the country is 3.79 million square miles. What is the population density for that country for 2009? Find the number of people per square mile.

How many seconds are in 3.14 hours?

What is 4x^2 + 3xy - 7xy + 2y^2

Multiplying polynomiala by binomials (a + b) (a + b) =

Jeff had $14.50. She spent $4.35 at the snack bar and $5.25 at the arcade. What is the exact amount of money jeff has left?

Estimate the sum to the nearest whole number 29.1 + 78.9 + 41.5

Find the function h (x) = f (x) ∘ g (x) if f (x) = x (2 - x) and g (x) = 3x.

Sandra counted the number of legs walking in the park she counted a total of 7 people and some dogs each person had two legs and each dog had four legs they were 22 legs how many dogs did she count

Solve 12x-5/<9 What is the answer

Joel made some muffins. He gave 1/4 of the muffin to a neighbor. He took 3/8of the muffins to school. what fraction of the muffins is left?