Mark made a business trip of 259.5259.5 miles. he averaged 59mph59⁢mph for the first part of the trip and 57mph57⁢mph for the second part. if the trip took 4.54.5 hours, how long did he travel at each rate?

- 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

24 units

step-by-step explanation:

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17