Answer:
A. (5x - 2) - (2x +1)
B. x -1
C. 68
Step-by-step explanation:
Heather = 5 times Donna -2 H = 5D - 2
Gina = 2 times Donna + 1 G = 2D + 1
Plug in D for X and you get
H = 5x -2
G = 2x + 1
If Heather's expression is 5x -2 and Gina's expression is 2x + 1 then to show how many more Heather has than Gina. You have to subtract Gina from Heather.
(5x - 2) - (2x +1)
Now to simplify it, you just combine all the like terms.
5x - 2 - 2x -1 = 3x - 3 and then you can simply this further by dividing all terms by 3. x - 1
To solve how many Heather has if Donna has 14. You substitute 14 for x in Heather's equation. 5 (14) -2 = 70 - 2 = 68
