Abox of cereal has a net weight of 42 ounces. if you buy three of these boxes, how much cereal will you have?

I have 126 ounces of cereal.

Step-by-step explanation:

A box of cereal has a net weight of 42 ounces. If i buy three of these boxes then I have to tell the total weight of cereal i have.

Since weight of 1 box of cereal = 42 ounces

So weight of 3 boxes of cereal = 42 + 42 + 42 = 3 × 42

Total weight = 126 ounces

Therefore, I have 126 ounces of cereal.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

step-by-step explan mxfcg'k; uafwgzfgjhklhgation: