Resposta :
Explicação passo-a-passo:
RENATA >>>>>> salário >>>> + 1 500
PEDRO >>>>>>IDEM >>>>>> + 450
RAFAEL >>>>>IDEM >>>>>> + 502
total salários >>>>>>>>>>>>>>>>>>>>>>>>>>>> + 2 452 >>>>
RESPOSTA b = 2 452,00 >>>>>
TOTAL DESPESAS ( DOS 3 )
Água, Luz >>>>>>>>>>>>>>>>>>>>>> -280,00
Internet >>>>>>>>>>>>>>>>>>>>>>>> - 99,00
Alimentação >>>>>>>>>>>>>>>>>>>> - 480,00
Cartão crédito >>>>>>>>>>>>>>>>>> - 980,00
TOTA DESPESA >>>>>>>>>>>>>>.>>>>>>>>>>>>>>>>>> - 1 839,0
saldo mensal >>>> + 2 452,00 - 1 839,00 = + 613,00 >>>>>resposta c
sinais diferentes diminui , dá sinal do maior
porcentagem despesas/ receitas
1 839 / 2 452 ou ( 1 839 * 100 )/ 2 452 = 183 900/ 2 452 = 75% >>>>resposta c