Answer:
x = -4
Step-by-step explanation:
I'm assuming we solve for x, so Let's solve for x!
First, combine like terms.
4x + 12 = -4
Now subtract -12 from each side.
4x = -16
Now, divide by 4 from each side.
x = -4
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.
Answer:
3 is the slope
Step-by-step explanation:
I have attached the steps so good luck