Can you ou guys please help me with the first two questions?

Describe all the numbers that when rounded to the nearest thousand are 645,000

Write the sentence as an equation. 6 fewer than the quantity 140 times j equals 104

If the table of the function contains exactly two potential turning points, one with an input value of –1, which statement best describes all possible values of m? m ≥ –12 –12 < m < 4 m ≤ 4 m ≥ 4 or m ≤ –12