3. It is believed that the world's current oil reserves total approximately 2000 billion barrels. If, on average, the total is decreasing by about 25 billion barrels of oil each year: (a) Find a linear equation for the remaining oil reserves, R, in terms of t, the number of years beyond the present. R.

(b) Ten years from now, how much oil will be in the reserves?

(C) If the rate of depletion remains constant, when will the world's oil reserves be depleted?​

sorry, i can't understand your question. will later if you describe more clearly!

: )

the correct answer to your question is a. 4^4

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option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25