The answers to the questions above are .2(20%) and .5(50%)
You want to do l*w*h=v then if you have two answers add them together and you should get the answer.
By the way I'm 11 and in sixth grade going on to 12 and going to be in seventh grade next year
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
The distance traveled by Davis family = 35 miles
Time taken to cover the distance =
hour
Speed = Distance
Time
Speed = 
Speed = 
So, speed = 70 miles/hour.
At 2:00 pm, the family destination was 245 miles away.
So, the number of hours, when the family was 245 miles away = 
= 3.5 hours
So, after 3.5 hours, that is at 5:30 pm, the Davis family will be 245 miles away.
The expression that is equivalent to 9^5 is 3^2