Answer:

Step-by-step explanation:

Taking equation (1)

Multiplying both sides by 2

Adding 6y to both sides

Putting this in (2)
5(18+6y) + y = 28
5(18+6y) + y = 28
90 + 30y+y = 28
31y+90-28 = 0
31 y + 62 = 0
31y = -62
Dividing both sides by 31
y = -2
Now,
x = 18 + 6y
x = 18+6(-2)
x = 18-12
x = 6
F(7)= -22 - 3(7) + 3
f(7)= -22 - 21 +3
f(7)= -40
Hope that helps!
Answer:
1.7
Step-by-step explanation:
Answer:
150 tickets
Step-by-step explanation:
Given: Tickets sold at four different gates
Gate B sold 26 % tickets
Tickets sold at Gate B = 39
Let take x as total number of tickets sold at all four gates.
Now, using the value of gate B to find total number of tickets
∴
⇒ 
Next, cross multiply both side
⇒ 
∴ Total tickets sold at all the four gates is 150