vb=1.600,00

n=?

d=0,25=0,0025

n=10dias

vb=N(1-nd)

n(1-0,0025.10)=1.600,00

n(1-0,025)=1.600,00

n=1600/0,975

n=1.641,02

Questão 2

vb=12.000

N=17.500

d=?

iof=0,05%= 0,0005 ad

n=15 dias

Vb=N(1-(d+IOF)n)

12.000=17.500(1-(d+0,0005)15)

1-(15d+0,0075)=12.000/17.500

0,9925+15d=0,07

15d=0,9925-0,07

d=0,2925/15

d=0,0195

d=1,95% a.d.

Questão 3

d=((i_ef+1)^1/f-1)n

d=((0,1525+1)^1/180 -1)180

d=((1,1525)^0,0055 -1)180

d=(1,0007-1)180

d=0,126

d=12,60% a semestre

Questão 4

A_vanunciado₌A_vproposto

650/1+0,04¹ + 650/1+0,04² =M/1+0,04¹ + M/1+0,04² +M/1+0,04³

650/1,04+650/1,0816=M(1,04+1,0816+1.1249)

2,7751M=1.225,96

M=1.225,96/2,7751

M=441,77

Renata Alves de Mendonça