Subtract 9x^2 + 7x - 2 from 8x -10

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative