Question 1158316

1) Laurie has $15,000 to invest.Total 

She placed a portion of the funds in a savings account. let it be $x

 and 3,000 more than twice this amount in a checking account.
3000+2x

 
2) The charity group helps the children living in poverty all over the world. In 2001 donation were about $120.5 million and in 2005 donation were about $216.5 million. The organization assumes that this trend will continue at a constant rate in the future. 

(216.5-120.5)/4

2.a) find the rate of change (slope) of donations over time and explain its meaning in the context of this problem?
=24 billion/year


2.b) write an equation to represent this situation.
 
C= 24x + 120.5 where x is the number of years after 2001
2.c) how much in donation can the organization expect in the year 2025?

c= 24*(25-21) +120.5

696.5 billion in 2025