D=dog's weight
c=cat's weight
d=7c
d+c=72
sub 7c for d
7c+c=72
8c=72
divide both sides by 8
c=9
d=7c
d=7(9)
d=63
dog=63lb
21(3a-2b) hope this help !
I’m sorry if I’m wrong
The correct answer is y=-13/10x+13 as it matches the graph
Hope this helped :)
The answer is 1.7m because 0.9 isnt bigger
