Answer:
x + y = 2.5,
where x = .5 and y =3
Explanation:
Using the criteria, you can set a=2.5, since it is between 2 and 3.
Then you can set b=-1.5 because that is between -1 and -2.
Using a=2.5 and b=-1.5, plug them into the second function:
x = .2a turns into x=.2(2.5), thus x = .5
y = -2b turns into y= -2 (-1.5), thus y=3.
Then add your x and y together.
x + y
Plug in your variables
.5 + 3 = 3.5