Answer:
4.50
Step-by-step explanation:
2.25 times (100/(sale percentage)), so 2.25 x 2
D. Y=3x+10
-1/7 y + 1/7 x
Can also be written as
1/7 x - 1/7 y
6
6(2) = 12
12 + 9 = 21
21/3 = 7
7 - 1 = 6 <--- Number that's she's thinking
I tested every number!