suppose that the world’s current oil reserves is R= 2150 billion barrels. If, on average, the total reserves is decreasing by 20 billion barrels of oil each year answer the following: A). give a Linear equation for the total remaining oil reserves, R, in billions of barrels, in terms of T, the number of years since now. B.) seven years from now, the total oil reserves will be __blank__ billions of barrels. C). if no other oil is deposited into the reserves, the worlds oil reserves will be completely depleted (all used up) approximately __blank__ years from now. (round your answer to two decimal places)

lol

step-by-step explanation:

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.