Celia and ryan are starting a nutrition program. celia currently consumes 1200 calories a day and will increase that number by 100 calories each day. ryan currently consumes 3230 calories a day and will decrease that number by 190 each day. they will continue consuming that same number of calories per day. in how many days will that be?

- 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

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: