At the beginning of the week, the ratio of cats to dogs at Glenna's Pet Store was 4 to 5. By the end of
the week, the number of cats had doubled, while the
number of dogs had increased by 12. If the ratio of
cats to dogs at the end of the week was 1 to 1, how
many cats did the store have at the beginning of the
week?

Answer is in the file below

cutt.ly/tz3yDpb

my acc plz

step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: