Write 21/99 as a decimal. Do not forget to reduce to the lowest term.

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?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

What is the difference between the predicted value and the actual value