Question

Com os cálculos pfv​

Answer 1

Oi

Basta usarmos a fórmula de juros compostos ....

M = c . ( 1 + i )^t

5 490 = 2 200 . ( 1 + i )^4

5 490/2 200 = ( 1 + i )^4

2,495 = (1 + i)^4

⁴√2,495 = 1 + i

1,256 = 1 + i

1,256 - 1 = i

i = 0,256

i ≈ 26 %  a.m

Bons estudos! :)

Answer 2

Juros compostos - matemática financeira:

M = C . $(1+i)^{t}$

5490 = 2200 . $(1+i)^{4}$

$(1+i)^{4}$ = 5490/2200

$(1+i)^{4}$ = 2,49

1 + i = $\sqrt[4]{2,49}$

1 + i = $2,49^{1/4}$ = $2,49^{0,25}$

1 + i = 1,25

i = 1,25 - 1

i = 0,25 = 25% a.m.

Resposta: alternativa A