Plz show work and try to get it correct! !

during two years, the population of birds of an island become 7 times more than before. if the first year increase in the population was 40%, what was the percent increase of the second year?

400%

Step-by-step explanation:

Let the initial population be 100.

In 2 years, it becomes 7 times, that would be:

100 * 7 = 700

1st year, the increase is 40%, that is:

40/100 = 0.4

0.4 * 100 = 40

After increase it becomes: 100 + 40 = 140

So, in 2nd year it will become 700 from 140. How much percentage increase is that??

That would be the increased amount (700 - 140 = 560) divided by the 1st year amount (140). Multiply that by 100 to get the percentage. Shown below:

700 - 140 = 560

Now,

560/140 = 4

4 * 100 = 400%

So, the percent increase of second year is 400%

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet