The ratio that is not equivalent is B. 7:15
The reason why it's not equivalent because for the other ratios:
1:5 could be turned into 2:10 by multiplying 1 and 5 by 2.
4:20 could turn into 2:10 by dividing both numbers by 2.
And 8:40 could be divided by 4 to get 2:10.
But you can't do anything to 7:15 to make it 2:10.
12:12 is the ratio because each fish can grow up to be 12 inches long so 12 gallons would be in the tank per fish.
577776776677::-7777vggv b.
Y-(-7)=-9(x-6)
Y+7= -9x+54
Subtract 7 from both sides
Y= -9x+47
The answer is D $126,if three cost $54 that means one costs $18 and just multiply it with seven
