Answer:
a) 4 months
b) $600
Step-by-step explanation:
1. x - number of months the total amount paid to be the same for both stores.
2. That same amount for store A: 
3. That same amount for store B: 
4. Since it's the same amount for both stores we can make an equation:
5. To find that same amount, we can use either side of above equation:
The answer is y=2 !!!!!!!!!!!!!!
Ans：60degree （A）
as they are opposite to each other
it would be C i think hope this helps
Answer:
x = 16°
4x-7 = 57°
3x+4 = 52°
5x-9 = 71°
Step-by-step explanation:
All angles of any triangle add up to 180°, so if we add up each equation and set it equal to 180 we can find x.
4x-7 + 3x+4 + 5x-9 = 180
Simplify by combining like terms.
12x-12 = 180
Then, do inverse operations to find x.
12x=192
x=16
Now that we found x, we can substitute 16 for x in each angle equation in the triangle.
4(16)-7 = 57
3(16)+4 = 52
5(16)-9 = 71
