Calculation of the average rate


Assignment:

1. Taxes

Along with incomes, people's charitable contributions have steadily increased over the past few years. The table below shows the average deduction for charitable contributions reported on individual income tax returns for the period 2007 to 2012. Find the average rate of change between 2009 and 2011.

Year

Charitable Contributions

 

 

2007

$1980

2008

$2350

2009

$2490

2010

$2760

2011

$3060

2012

3120

2. Given the following piecewise function:

(??) = -?? +1 ????????< 0

-1?????? 0 ≤ ?? ≤ 3

-2??????????> 3

a. Find the domain.

b. Find the range.

c. Find the intercepts.

d. Is f continuous on its domain? If not, state where f is discontinuous.

e. Graph the function.

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