A= (21, -9) B=(x, 4) and C= 12x.

Given that AB = C, then find x.

Can I get an explanation please

Write a polynomial that fits the description: a third-degree polynomial with leading coefficient -4

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6