1 and 1/2 is the same as 1.5 and 1.5 * 4 is 6 so I would say 4
Answer:
AB=24.5
Step-by-step explanation:
5x+7=7x
7=2x
x=3.5
7(3.5)=24.5
4x+8(x+1)+y+2x = 14x+11
4x+8x+8+y+2x = 14x+11
14x+8+y = 14x+11
-14x-8 -14x-8
y = 3
So, 4x+8(x+1)+3+2x
You just keep subtracting 3 yo the previous number, so day one would be $82 and day three would be $79...etc. Day five would be $70 so sweet