Use the following values for x {-1 ,0 , 1 , 2 } for the function f{x} = 4x+3 to make a function table please help me , and thanks

Answer question above and explain each step : )

What is the value of the expression below? 148+(-6)| + |– 35= 7|

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?