Which statement shows how two polynomials 4x2 and x2 + 3x + 7 demonstrate the closure property when multiplied? a 4x3 + 12x2 + 28x may or may not be a polynomial b 4x3 + 12x2 + 28x is a polynomial c 4x4 + 12x3 + 28x2 may or may not be a polynomial d 4x4 + 12x3 + 28x2 is a polynomial

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37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3