Answer:
I guess it would be C, but i dont get "all numbers are answers" tho cos i thought this equation would be infinitely many solutionsssss
Step-by-step explanation:
4(x+1)+x=5(x-1)+9
4x + 4 + x = 5x -5 + 9
5x + 4 = 5x + 4
Hope this helpeddd
Answer:

Step-by-step explanation:
Given

Required:
Solve for 
For x = 0


For x = 1


For x= 2


For x = 3


Hence, the results are:

Answer:
Step-by-step explanation:

A function is where each input (x) has only 1 output (y). Since no x values have more than one y value, this is a function (answer A)
Answer:
Subtracting a positive number from a positive number......this is normal subtraction