Respuesta :

Answer:

b₂ = 5

Step-by-step explanation:

Substitute the given values into the formula

16 = [tex]\frac{1}{2}[/tex] × 4 × (3 + b₂)

16 = 2(3 + b₂) ( divide both sides by 2 )

8 = 3 + b₂ ( subtract 3 from both sides )

5 = b₂