The third table on the top row. It has a linear function because the Y is always constant. For example: -3 + -2= -5 -5 + -2= -7
7 it’s 7 because I did this already and remembered the answer to it

Now multiple the coefficients and add the exponents with common bases

Now write your final expression

Hope I helped!
The independent variable is your input (x-value) and the dependent variable (y-value) depends on what the input is.
y = 10x
y is total money earned
x = number of lawns mowed
The first answer listed
The answer is 5
2 translates to 10 after being multiplied by 5
1 translated to 5 after being multiplied by 5
Hope this helped :)