Me or the world is going to (or my grades)

1 us dollar = .85 euros

and 1 euro = 1.18 dollars

Step-by-step explanation:

E = 17/20 D

If we have 1 D

E =17/20 (1)

E = .85

If we have 1 euro

1 = 17/20 D

Multiply each side by 20/17

20/17 = 20/17 * 17/20 D

20/17 = D

1.176470588 =D

Since this is money we round to the nearest cent

1.18 = D

- 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