
3ª Série - Função Exponencial
Authored by EUCLIDES SIPRIANO DE OLIVEIRA
Mathematics
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6 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
A quantidade de bactérias de uma cultura, depois de t horas, é dada pela expressão Q(t)=Q0 ⋅2t, e, em que Q0 é a quantidade inicial de bactérias. Nessas condições, se inicialmente havia 1500 bactérias, após quantas horas haverá 12.000 bactérias?
2.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Durante um experimento, obteve-se a fórmula para a população de bactérias:
q(t)=20⋅33t
Em que t é o tempo, em hora, e q(t) é a população, em milhares de bactérias. Se a população de bactérias era incialmente de 20 mil, então após quanto tempo ela será triplicada?
10 mimutos
15 minutos
20 minutos
25 minutos
3.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
4x = 1/64
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
De acordo com uma das propriedades da potenciação como fica o resultado para essa expressão (74)3:
77
78
71
712
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1
2
3
4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
50
100
150
200
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