Amulberry silk worm can spit a single thread the measure up to 3,900 ft in length. write the number in scientific notation?

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

If the dimensions of a rectangular prism are 5 ft x 3.5 ft x 2 ſt, what is the surface area?

Prove that quadrilateral is a rhombus.