Anna bought 8 tetras and 2 rainbow fish for her aquarium. The rainbow fish cost $6 more than the tetras. She paid a total of $37.

Which of the following is true? Select all that apply.

A.

An equation to find the cost t, in dollars, of a tetra is 8 t + 2 t + 6 = 37.

B.

The cost of 4 tetras is the same as the cost of a rainbow fish.

C.

Reducing the number of rainbow fish by 1 would result in a total cost of $28.50.

D.

An equation to find the cost r, in dollars, of a rainbow fish is 8 r + 2 (r + 6) 37.

E.

One rainbow fish plus 5 tetras cost $21.