I think it’s 10,21 and 40, in that order. Sorry if I’m wrong:(
Answer:
x=6
Step-by-step explanation:
Divide both sides by 3
Answer:
The original number was 54.5.
Step-by-step explanation:
If a number is increased by 2.8%, then it is 102.8% of it's original number.
In mathematics, "of" in virtually all cases means "multiplied by".
Therefore, we do the opposite:
1. Convert to a decimal.
102.8% = 1.028
2. Divide by the decimal.

3. Round it to the nearest tenth.
54.47 rounds to 54.5.
Firstly make the f(x) = x and x = y:
x = y^2
Then solve for y:
√x = y
Hopefully this helps and let me know if you have more questions!