For which rational expression is -which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

What is the smallest integer n such that n\sqrt{2} is greater than 20

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b