In this exercise we have to use the knowledge of finance to calculate the amount of tickets sold to children based on the profit made, in this way we can say that this value corresponds to:
500 children's tickets.
Let's say x represents the number of children's tickets sold, y represents the number of college tickets sold, and z represents the number of adult tickets sold.
For each child ticket sold, we add x to the total. Similarly, for college tickets, we add y and for adult tickets, we add z.
The total revenue can therefore be represented as:
Replacing the values already known in the text in the formula given above, we have:
Substitute x-100 for y in the second equation
subtract 7700 from both sides to isolate the x and its coefficient
See more about finances at brainly.com/question/10024737
Answer:
She must work at least 7 hours. All possible values are 7, 8, 9, 10
Step-by-step explanation:
14 - 4 = 10
4($7)=$28
$130-$28=$102
$102÷$15=6.8
$15x7=$105
$105+$28=$133
$15x8=$120
$120+$28=$148
$15x9=$135
$135+$28=$163
$15x10=$150
$150+$28=$178
Answer:
D
Step-by-step explanation:
pretty self explanatory, comment if you need help though!
Answer: (2,-1)
Solution:
The critical points of a function are those where the first derivative is zero.
Find the first derivative of f(x), d f(x) / dx
1) Given: f(x) = -x^2 + 4x - 5.
2) d f(x) / dx = d [ - x^2 + 4x - 5] / dx = -2x + 4
3) Equal d f(x) / dx to 0
d f(x) / dx = -2x + 4 = 0 => 2x = 4, => x = 2
4) Replace 2 in the function f(x)
f(2) = - (2)^2 + 4(2) - 5 = - 4 + 8 - 5 = - 1
5) Answer: point ( 2, -1)
Sure what are the questions?