Answer:
1) (1,0) (2,0) and (-3,0)
2) F(x)>0 (-infinity,-4)
3) x goes to + infinity and the line goes to + infinity
4) 56
5) first choice
Explanation:
1) see where the line touches the x-axis and no where else. There are 3 points where the line does touch them and those are the answers.
2) interval is usually the space of where you check. They said (-infinity,-4) so anything to the left of x= -4. Identify where the x-axis is and decide if the line is above or below it. Below= - Above= +
3) Line goes to top right. We need to understand that the right on the x-axis is positive and up on the y-axis is positive. so if it is going to the right and up, its going to (+infinity, +infinity)
4) Local maximum over interval. Like What I said for #2, its where you check. So check everything from x= -3 to x=1.5 and see the highest point as a y value. In this case, the highest or biggest number is 56.
5) Again intervals, You check the numbers and identify where the x-axis is and see if it is above or below