Rational: Any number that can be expressed as a fraction (or a ratio.)
Irrational: Not rational, any number that can't be written down as a fraction. Some examples include

,

, and so on.
Let y be a number
Note:
The product of 7 and a number is translated into 7y.
The sum of 10 and 7y is translated into 10 + 7y.
So the answer is B.
Answer:
for the points
Step-by-step explanation:
u dumb tbh
To do this you must divide the two numbers -23÷45 is -0.511111....
Answer:
8+15+4x and 3x+15+3x
Step-by-step explanation: