Well we don't have the choices, maybe they're coming.
We want r(1)=2, r(2)=5, r(3)=8, ...
We can write that

That's equivalent to

Hopefully those are the two expressions among the choices. There are many equivalent expressions but these are the most likely.
The answer is c stcostcostcostcostcostco
Responder:
Área do campo de futebol = 360m²
Explicação passo a passo:
Dado que :
Comprimento = 24 m
Largura = 15 m
Área do campo = comprimento * largura
Área do campo de futebol = 24m * 15m
Área do campo de futebol = 360m²
I'm not sure how the correct way to do this would be but if you have a ratio that is 5:2 think of it as having 5 groups of animals and 2 groups of animals.
Find the number by dividing the total amount of animals 98/7 = 14.
We know that there are 5 groups of cats, the ratio for 5 cats. 14 x 5 = 70.
The remainder is dogs, which has a ratio of 2:5. 14 x 2 = 28.
70 + 28 = 98.
Si= PTR/100
18 = (3*300*t)/100
18 = 9t
t = 2
2 years