The number is -13.
In order to find this, we first need to make each part of the statement into a mathematical statement.
Twice the difference of a number and 2.
2(x - 2)
Three times the sum of the number and 3
3(x + 3)
Now we can set them equal to each other and solve.
2(x - 2) = 3(x + 3) ----> Distribute
2x - 4 = 3x + 9 ------> Subtract 2x from both sides
-4 = x + 9 -----> Subtract 9 from both sides
-13 = x
Answer: C. 6 zebra fish, 5 neon tetras. Is $21.60
Step-by-step explanation:
1.85 • 6 = 11.10
2.10 • 5 = 10.50
11.10 + 10.50 = 21.60
$21.60