A company that sold fish for an aquarium had a special one weekend on tetras and angel fish.
- The store sold a total of 110 of those types of fish over the weekend.
The tetras each sold for $0.40 and the angel fish each sold for $1.20. They made a
total of $80 in selling those fish.
Which system of equations best represents this situation if t = the number of tetras
and a = the number of angel fish.

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

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