Answer:
$760
Step-by-step explanation:
The number of adult ticket is the same as the number of (age 5-12) tickets.
Let the number of adult ticket be x
Number of (age 5-12) tickets be x
Total ticket sold = 38
x + x = 38
2x = 38
x = 19
Cost of each adult ticket = $23
Total cost for 19 such tickets = 23×19
= $437
Cost of each (age 5-12) ticket = $17
Total cost for 19 such tickets = 19×17
= $323
Total cost of 38 tickets = 437 + 323
= $760
Hence, the total cost of tickets is $760
Step-by-step explanation:
First you should round the numbers that you are multiplying so.
56 ---> 60
27---> 30
You know that 5 and higher you'll round up.
4 and below you'll round down.
The vertex is the minimum or the maximum point of the parabola.
<em>x and f(x) represent the horizontal and the vertical coordinates of the vertex.</em>
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The standard form of a parabola is

The x coordinate of the parabola is calculated using:

The value of the x-coordinate is then plugged in, into the equation to calculate the y-coordinate, as follows:

At the end of the calculation,
x and f(x) represent the horizontal and the vertical coordinates of the vertex.
Take for instance:

The x-coordinate of the vertex is:




The y-coordinate is:



So, the vertex of
is (-1,11)
See attachment for illustration of vertex of 
Read more about vertex of parabola at:
brainly.com/question/20209326
It’s the top left! hope it helps
It would be 4x so then the equation would be 4x (x^2 + 3x - 2)