I would answer but I don’t see the options to choose... can you tell me?
For this case we have the following equation:

From here, we must clear the value of y.
For this, we follow the following steps:
1) Distributive property:

2) Variable terms on one side of the equation and constant terms on the other side of the equation:

3) Algebraically add the constant terms:

4) Pass the number 20 to divide:

Answer:
The value of y is given by:

Answer: k(0) = 4; k (2x - 7) = 2x -3
Step-by-step explanation:
If k(a) = a + 4
K(0) will be 0 + 4
K(0)= 4
Then, k (2x - 7) = 2x -7 +4
K (2x - 7) = 2x - 3
153:53 is a ratio! Another form of this ratio could be "153 to 53" or "153/53".