Help me pls pls pls pls

Answers are: choice C, choice D

Explanation:

Let

a = adult admission fee

c = child admission fee

Focus on row 1 for now

45a = cost of having 45 adults total

30c = cost of having 30 children total

45a+30c = total cost of 45 adults and 30 children = 315

So, 45a+30c = 315 is the first equation

Now move to row 2

For similar reasoning, 50a+40c = 370 is the other equation

50a = cost of having 50 adults buy a ticket

40c = cost of having 40 children buy a ticket

50a+40c = total cost of having 50 adults and 40 children = 370

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

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