Am going correct with this one.

It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this year?

S-4000=1
S=1+4000
S=4001 of species we have on this earth this year

Please don't post duplicates.

sorry I didn't mean to.

To determine the number of species on Earth this year, you'll need to subtract 4000 from the number of species living last year.

Let's assume S represents the number of species living last year. To find out the number of species on Earth this year, you can use the equation:

S - 4000 = X

Where X represents the number of species on Earth this year.

To solve for X:

1. Add 4000 to both sides of the equation:
(S - 4000) + 4000 = X + 4000
S = X + 4000

2. Subtract 4000 from both sides of the equation:
S - 4000 - 4000 = X + 4000 - 4000
S - 8000 = X

Hence, the correct equation to find the number of species on Earth this year is X = S - 8000.

Therefore, it is not correct to say that there are 4001 species on Earth this year. The number of species this year depends on the starting number of species last year (represented by S).