Which operation is NOT closed for polynomials?
(x2 + 2x - 5)
(x + 3x + 1)
(x2 + 2x - 5)(4x2 + 3x - 6)
(x2 + 2x - 5) + (x2 – 5x + 1)
(2x2 + 2x - 5) - (x2 + 6x + 2)
the answer is A

hi,

3. 12.15, you are correct.

4.2.01, your first digit is correct,

hope this !

what graph

step-by-step explanation:

c = 0.429t

step-by-step explanation:

the constant rate at which carlos harvests cassava is 35 minutes per 15 cassavas 15/35 = 0.429 cassava per minute

therefore, an equation that models the number of cassava (c) that harvest carlos in a time (t) is the following:

where t is the time in minutes.

this means that when 35 minutes have elapsed 15 cassava have been harvested, at 70 minutes 30 cassava have been harvested and so on.