If g=guppy, go=goldfish, b=bettafish and a=angelfish we can set up expressions for each set of fish.
1g=3go
1go=2b
1b=2a
By working backwards and substituting we can finally work out 1 guppy to be equal to 12 angelfish.
If x and y vary inversely, then xy = const.
x = 10, y = 8

Answer:
b
Step-by-step explanation:
Answer:
20.9 is the answer because To round 20.86 to the nearest tenth consider the hundredths’ value of 20.86, which is 6 and equal or more than 5. Therefore, the tenths value of 20.86 increases by 1 to 9. 20.86 rounded to the nearest tenth = 20.9