The profit (in dollars) earned by selling w apple trees is represented by w? – 4w + 14. The profit in dollars) earned by selling w pear trees is
represented by 2w + 10. Write a polynomial that represents how much
more profit is earned by selling w apple trees than w pear trees.

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics