Answer:
c
Step-by-step explanation:
(3x + 2x = 2400)
(5x = 2400)
(x = 480)
(480 were sold for each)
Answer:
x=y
x+12x=-26
13x=-26
x=-2
y=-2
Step-by-step explanation:
<u>Part A</u>
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<u>Part B</u>
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<u>Part C</u>
No, because although they provide examples for specific polynomials being closed under addition and subtraction, there is a loss of generality.