Question

Can you please Help me? Check my answer?
Choose the correct answer.
Elena bought 320 tropical fish for a museum display. She bought 7 times as many triggerfish as parrotfish. How many of each type of fish did she buy?
Which is a system of equations to model the problem if x represents the number of parrotfish Elena bought and y represents the number of triggerfish she bought?
A. x – y = 320
y = 7x
B. x + y = 7
y = 320x
C. x + 7y = 320
y = 7x
D. x + y = 320
y = 7x
I think it is c but I am not for sure. I still thinkin c or a

Answer 1

x = parrotfish
y = triggerfish

x + y = 320 --- there is a total of 320 parrotfish and triggerfish
y = 7x -- 7 times as many triggerfish then parrot fish

check..
x + 7x = 320
8x = 320
x = 320/8
x = 40

y = 7x
y = 7(40)
y = 280

so there is 280 triggerfish (y) and 40 parrotfish (x)...added together = 320

Answer 2

so whats the answer im confused