you solve it like an equation.
4x+20<40
4x<20
x<5
so the answer would be anything less than 5, which is A
16.6 repeated
hope this helps, if not, sorry
Step-by-step explanation:
if one were to put the y value the equation they could find out what x is for a certain value of y
putting the value of y(1), we get the equation
1=4x-1
2=4x
x=0.5
the value of x when y is 1 is =0.5
NOTE: I got this explanation on brainy on someone else I am not taking the credit