Answer:
.
Step-by-step explanation:
We want to convert the function into the form that let's us easily find the x-intercept, and it would be for the form
because then we can find the x-intercept in the following manner:



We factor our function
and get

Now this form let's us easily find the x-intercepts:


and so we pick the second choice: f(x)=(2x+1)(2x-1).
Answer:
5
Step-by-step explanation:
There are five major causes of extinction: habitat loss, an introduced species, pollution, population growth, and overconsumption.
Answer:
David saves the most (20%)
Step-by-step explanation:
The fraction Anna saves is given as 19%.
The fraction Laura saves is 1-(17/20) = 3/20 = 15/100 = 15%.
The fraction David saves is 2/(2+8) = 2/10 = 20/100 = 20%.
David saves the most of his salary each month.
Answer:
40 square units
Step-by-step explanation:
The question gives that both the large shape and the small missing shape are rectangles. The formula for the area of a rectangle is
where "A" is the "Area", "b" is the "base" (bottom edge), and "h" is the height (side edge).
For rectangles, opposite sides (example: top & bottom) have the same length, so the top of the missing rectangle must also be 3.
To find the area of the figure, we must find the difference (subtraction) between the large rectangle (without a hole out of it) and the rectangular hole.

So, the area of the figure is 40 square units.