## steve816 one year ago Please I need your help! Find the average rate of change from 2 to 3 for each function f.

1. steve816

$f(x)=3x-4x^2$

2. anonymous

$average. rate =\frac{ f(b)-f(a) }{ b-a }$

3. anonymous

so $f(x=2)=3*2-4(2)^2=6-16=-10$

4. anonymous

similarly $f(x=3)=-27$

5. anonymous

$average rate=\frac{ -27-(-10) }{ 3-2 }=-17$

6. anonymous

now if it was a practical question, we would have units -17 units per unit time