im not sure but I think it is b
Answer:
the ratio = x/24
Step-by-step explanation:
It is given that,
unknown amount (x) invested in company A to the known amount ($24) invested in company B
The amount invested in company A is x and
The amount invested in company B is $24
Therefore the ratio of the amounted invested in company A to that of company B is x/24
Therefore the answer x/24
Y =3x+13---------#
-4x+3y=19-------*
subsititute value of y in equation *
-4x+3(3x+13)=19
-4x+9x+39=19
5x=-20
x=-20/5
x= -4