Renee just began her job as an elementary school teacher. she is told that her starting salary will be $35000 per year. she is also told that her salary will increase to $36960 in 7 years. assume that x = the years worked and y = salary in dollars. what is the rate of change of renee's salary?

Renee's salary begins at $35000 and ends 7 years later as $36960. The salary increase is $1960.

Over 7 years, then, the rate of change of Renee's salary is

$1960

= $280/year.

7 yrs

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

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