Prove: For every integer n ≥ 1, 12 +22 +32 +...+n2 = n(n+1)(2n+1)

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

The table below lists recommended amounts of food to order for 10 party guests. how much of each food item should nathan and amanda order for a graduation party with 55 guests? use the table to answer. item amount fried chicken 16 pieces lasagna 7 pounds deli meats 1.8 pounds sliced cheese 1 and two fifths pounds bakery buns 1 dozen potato salad 2 pounds