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

i need the options

step-by-step explanation:

first one because it can't have a fraction in it

step-by-step explanation: