Find an nth degree polynomial function with real coefficients satisfying the given conditions. calculator

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Do,h = (7, 9) (14, 18) the scale factor is

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]