Time is -b/2a, which is 3.
f(3) = 24 = maximum congestion
57 children tickets were sold on Saturday.
You could set this up as a system of equations.
x + y = 155
6.00x + 9.90y = 1312.20
First step is multiplying the first equation by -6 to use the elimination method.
-6.00x + -6.00y = -930
6.00x + 9.90y = 1312.20
The positive and negative 6x cancel out until you are only left with the y.
Combining them would make your equation...
3.9y = 382.2
Next you would divide by 3.9 on both sides to get the y by itself.
The result of that would be y = 98. Which means 98 adult tickets were sold. Then you would plug y into either of the equations to solve for x.
Answer:
D. 76
Step-by-step explanation:
200x5%=10
300x7%=21
500x9%=45
10+21+45=76
Equation (1)
Equation (2)
Get y alone in equation (1)
Insert y in equation (2)
