14. maria said the expression -4n+3+9n-4
is equivalent to 4n. what error did maria likely make?

15. write an expression equivalent to x-3y+4.

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

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!