Amathematical model is a simplified description of a system or a process. in your opinion, how are mathematical models ? what are the advantages and disadvantages of using a model?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Will mark the brainliest. paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?