Anew video game is expected to sell 102 copies the first hour at a local game store. after that, the sales will follow the function s(x) = 11(x − 1) where x is the number of hours. what is the function that shows total sales, including the first hour? a. s(x) = 102 - 11(x - 1) b. s(x) = 102 + 11(x - 1) c. s(x) = 11(x - 1) - 102 d. s(x) = 102x - 11

- 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

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: