Expand. your answer should be a polynomial in standard form. (4−7y)(7+4y)

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value