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emaliemcfalls1234
23.06.2020 •
Mathematics
Para evitar uma epidemia, a Secretaria de Saúde de uma cidade dedetizou todos os bairros, de modo a evitar a proliferação do mosquito da dengue. Sabe-se que o número f de infectados é dado pela função f(t) = -2t² + 120t (em que t é expresso em dia e t = 0 é o dia anterior à primeira infecção) e que tal expressão é válida para os 60 primeiros dias da epidemia. DETERMINE:
a) A concavidade;
b) O ponto que intercepta o eixo x;
c) O ponto que intercepta o eixo y;
d) O vértice da parábola;
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Ответ:
The percent increase is
For product B, the rate of increase is
The percent increase is
Product A has a higher percent increase.