Answer:
Iliana is correct because Henry included a fraction. Fractions are not integers.
The final price is $135 , because
.10 × 150 = 15
150 - 15 = 135
I'm assuming that the number after the variable is supposed to be the exponent.

Combine like terms to get:
Well first of all, we know right away that no rounding will be necessary, because the square of a whole number is another whole number. The square of 110 is 12,100 .