Please help!! in its expanded form a number includes three powers of 10 and a 5 that is worth a lot what might the number be

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Complete the equation of the live through (-1,6) (7,-2)

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply