Acomedy show sells lower level tickets for $77 and upper level tickets for $99. on the opening night 2615 tickets were sold for a total $247071.

Let x represent lower level tickets that cost $77

Let y represent upper level tickets that cost $99

Cost equation: 77x + 99y = 247,071

Tickets equation: x + y = 2615

Using the elimination method, multiply the second equation by -77:

77x + 99y = 247,071

-77x - 77y = -201,355

--> 22y = 45,716

--> y = 2,078

Now plug "y" into either equation and solve for "x". I chose the Tickets equation. x + y = 2615 → x = 2615 - y → x = 2615 - 2078 → x = 537

lower level = 537 tickets, upper level = 2078 tickets.

Let U = upper

Let L = lower

U + L = 2615

99U + 77L = 247071 You can make your life slightly easier by dividing this equation through by 11

9U + 7L =24461 Multiply the first equation by 7

7U + 7L = 2615 * 7

7U +7L = 18305

Combine the 2 new equations

9U + 7L = 24461

7U + 7L = 18305 Subtract

2U = 6156 Divide by 2

U = 6156 / 2

U = 3078

The Number of Upper Level Tickets sold was 3078

gregory's graph is incorrect because it shows 2 inches of growth for each week when it should show 0.75 inches of growth each week.

the population of other specie of birds will decline or other specie of birds will find some alternate source of food to survive.

explanation:

according to the competitive exclusion principle, which is also known as gause's law, two specie living in the same niche and feeding on the same resource cannot co-exist stably.

as we have well studied the theory of natural selection which states that only those organisms survive which have better tendency to compete for food and adapt to the environmental conditions.

coming towards the question, what wi ll happen when one species outcompetes the other for the small fish , the other specie will not get enough food and will start to die or decline in population. eventually either other specie needs to find another alternative food source for itself or migrate at some other location where there is less competition otherwise it will just not exist anymore at that niche.

hope it !