Answer:
7x^{4} - 56x^{3} + 35x^{2} + 28x - 42
Step-by-step explanation:
I hope is still help.
i belive the answer is B
336
explanation:
percent. part
_______ = _____
100. whole
42. ?
____ = ____
100. 800
cross multiply
800×42=33,600
then divide by 100
33,600/100=336
