SOLUTION: If p represents the world population in billiond and y represent the number of years after 1960, then the world oopulation after 1960 can be closely approximated by the equation p=

Algebra ->  Coordinate-system -> SOLUTION: If p represents the world population in billiond and y represent the number of years after 1960, then the world oopulation after 1960 can be closely approximated by the equation p=      Log On


   

Question 1152982: If p represents the world population in billiond and y represent the number of years after 1960, then the world oopulation after 1960 can be closely approximated by the equation p=0.077y+ 3.04. Which number most closely approximates the predicted population of the world, in billions, in the year 2015?
A.4.20billion
B.6.51 billion
C.7.28 billion
D.14.59 billion
Found 2 solutions by josmiceli, MathLover1:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+1960+%2B+55+=+2015+, so
+y+=+55+
+p+=+.077%2A55+%2B+3.04+
+p+=+4.235+%2B+3.04+
+p+=+7.275+
The answer is C. 7.28 billion

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

first find the number of years from 1960 to 2015
2015-1960=55
=>y=55
p=0.077y%2B+3.04
p=0.077%2A55%2B+3.04
p=4.235%2B+3.04
p=7.275
p=7.28
answer: C.7.28 billion