The distance from a star to a planet is 31 1019 m

Question

1.Write 1.23 * 10^–3 in standard notation.

2.The distance from a star to a planet is 3.1 * 10¹⁹ m.  How long does it take light, traveling at 1016 m/year, to travel from the star to the planet?

3.Multiply.     (a² + 2ab – b²)(a² – 7ab + b²)

4.A parsec is approximately 3.1 ? 1016 meters.  How many meters are there in 5 ? 109 parsecs?

5.Multiply.     (x – 3)(x – 2)(x – 2)

6.Multiply.     (x – 4)(x + 4)

7.Write in descending-exponent form, and give the degree.

–4x2 – 4x5 – 7

8.Write 0.000071 in scientific notation.

9.Add 5b + 6 and 7b + 1.

10.Find the value of the polynomial 5x + 5 when x = 4 and when x = –4.

11.Write 5.72 *10^–5 in standard notation.

12.Multiply.     (x + 5)(x – 5)

13.Subtract 2x – 3x² + 5x³ from 5x³ + 4x – x².

14.Write using positive exponents only.     b^–17