explain the four weed control methods. give at least 2 examples that you practice. 2 example in each control method.. plzz ans this question​

Cultural Weed Control, Mechanical Weed Control, Biological Weed Control and Chemical Weed Control.

Explanation:

Cultural Weed Control, Mechanical Weed Control, Biological Weed Control and Chemical Weed Control are the four methods used for weed controls.  Pulling and digging are the two examples of Mechanical weed control while on the other hand, herbicides such as Metribuzin and 2,4-dichlorophenoxyacetic acid (2,4-D) are the two examples of Chemical Weed Control. Herbicide is the most effective and quick method used for weed control.

b is the answer and if you need further with anything message me

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.