Write and solve an equation. The current temp is 54•F. It's expected
to rise 2.5•F each hour. In how many
hours will the temp be 84•F

12

Step-by-step explanation:

84-54=30

30/2.5=12

- 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

1

step-by-step explanation:

you are throwing one dart