A car dealership sold 65 new cars and 75 used cars this year. The number of new cars sold by the dealership has been increasing by 7 cars each year. The number of used cars sold by the
dealership has been decreasing by 5 cars each year.
If these trends continue, in how many years will the number of new cars sold be twice the
number of used cars sold?
The number of new cars sold will be twice the number of used cars sold in
years.

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

i dont know sorry

step-by-step explanation:

answer: 193

explanation:

200-7 = 193