Answer:
closure
Step-by-step explanation:
The property is actually a property <em>of the set of polynomials</em>, rather than a property of <em>multiplication</em>.
The set of polynomials is closed under the operation of multiplication. We call that property <em>closure</em>.
15·0.8 + x = 30·0.9 --> x = 15
C. is the correct answer
Q1: B
Q2: D
Q3: B
Q3: C
explanation: