Animal y=5.4x+34

person y=12x+8.5 y is weight x is years. when is the weight the same

Step-by-step explanation:

Animal Person

y = 5.4x + 34 y = 12x + 8.5; where y - weight, x - years

looking for when weight (y) is the same, so we need

animal weight (y) = person weight (y)

5.4x + 34 = 12x + 8.5

-5.4x - 5.4x

34 = 6.6x + 8.5

-8.5 - 8.5

25.5 = 6.6x divide both sides by 6.6

x = 3.86 years

not sure if you need your answer in decimal or what, but you can adjust accordingly.