Answer: 
Step-by-step explanation:
For this exercise you can use the following formula for calculate the slope:

In this case you know that the given line passes through the points (-3,0) and (1.4). Therefore you can identify that:

Then, in order to calculate the slope of this line, you must substitute the coordinates of the points into the formula:

Finally, evaluating, you get that the slope of this line is the following:

Answer:
5
Step-by-step explanation:
Answer:
4 minutes and 32 seconds
Step-by-step explanation:
card $20.00-money left over $15.68 $20.00-$15.68 4.32
First move the constant to the other side causing it to change sides
4x<-6-6
Then calculate the difference (-6-6)
4x<-12
Now divide both sides by 4
X<-3
Then you are left with your answer:
x<-3
Hope this helps! :3