10/4 is not the simplified version that it can be. So 5/2 would be the same expression.
Answer:
x=1
y=-4
Step-by-step explanation:
4x+y=0 -> y= -4x
2(-4x)+x=-7
-8x+ x=-7
-7x=-7
x=-7/-7=1
y=-4 . 1 = -4
Given:
Joining fee = $28
Fee of each event = $4
To find:
Total cost for someone to attend 4 events.
Solution:
Let the number of events be x and total fee be y.
Fee for 1 event = $4
Fee for x events = $4x
Joining fee remains constant. So, the total fee is
![y=28+4x](https://tex.z-dn.net/?f=y%3D28%2B4x)
Substitute x=4 in this equation.
![y=28+4(4)](https://tex.z-dn.net/?f=y%3D28%2B4%284%29)
![y=28+16](https://tex.z-dn.net/?f=y%3D28%2B16)
![y=44](https://tex.z-dn.net/?f=y%3D44)
Therefore, total cost of 4 events is $44.
The answer is b
hope this helps :)
..........The answer is D