First distribute the 3 so you'll have:
12+12x=12x+12
Next you subtract 12 from both sides and you'll get:
12x=12x
then you divide both sides by 12 and you get:
x=x
8.8-3.4=5.4
Just subtract 8-3 and 8-4 and you'll get 5.4
Hope it helps!

Brainliest please if you found my answer helpful! :)
Answer:
6 seconds
Step-by-step explanation:
Look on the x axis and it tells you the time, the y axis tells you the distance
Answer:
sin90 =1
cos 90 = 0
Step-by-step explanation:
θ = 90 degrees