Substitue what y equals for y and solve.

Hope this helps.
It is the first one,
........ 20. 24
256a. b
Answer:
MJ = 0.7 × 7 = 4.9
Step-by-step explanation:
its 4.9 im sure, its hard to explain it
I think it is D)
I’m sorry if I’m wrong
Answer:
A square root of a number is a value that, when multiplied by itself, gives the number.
Example: 4 × 4 = 16, so a square root of 16 is 4.
The symbol for a square root is √ which always means the positive square root.
Example: √36 = 6 (because 6 x 6 = 36)