Answer:
The amount of water left is 1550 litres
K-3 is the expression for 3 fewer than K
The pairs of goldfish Tasha can buy for $20 are

Step-by-step explanation:
To find the how many type of goldfish that Tasha can buy for $20 is the set of positive ordered pairs.
Let x denote the number of fancy goldfish.
Let y denote the number of common goldfish.
To find how much goldfish can Tasha buy for $20 is to substitute the value for x in the equation 
Now, substituting
in
, we get,

The ordered pair is 
Similarly, substituting
,

For
,

For
,

For
,

For
,

For
,

Thus, the pairs of goldfish Tasha can buy for $20 are 

Answer:
7 a.m is 5.5
Step-by-step explanation:
(6=4)+1.5=(_+1.5)
make a T chart
thats how it should work for you
Answer:
If B is the midpoint, it means
AC=2AB
8= 2(3x-1)
8= 6x-2
8+2= 6x
10= 6x
x= 10/6
x= 1.67
Hope it helps :-)