Answer:
4 < 2a -4 < 10
Step-by-step explanation:
You have an expression for 'a'. To get an expression for 2a-4, multiply it by 2 and subtract 4.
4 < a < 7
8 < 2a < 14 . . . . . . multiply by 2
4 < 2a -4 < 10 . . . subtract 4
