Step-by-step explanation:
h(x) = (f-g) (x) = 3x²+4x-10- 7x²+x-4
= -4x²+5x-14 (option D)
5n – 7p + 3n = 25p
Combine like terms
8n - 7p = 25p
Add (7p) to both sides
8n - 7p + 7p = 25p + 7p
Simplifying
8n = 32p
Divide both sides by 8
8n / 8 = 32p / 8
n = 4p