Practice problem
Let f(x)=x2−21x+20f(x) = x^2-21x+20f(x)=x2−21x+20. Approximate f(1.5)f(1.5)f(1.5) by choosing the correct range out of the following choices.
f(1.5)<−20f(1.5) < -20f(1.5)<−20
−20<f(1.5)<−10-20 < f(1.5) < -10−20<f(1.5)<−10
−10<f(1.5)<0-10 < f(1.5) < 0−10<f(1.5)<0
0<f(1.5)<100 < f(1.5) < 100<f(1.5)<10
10<f(1.5)<2010 < f(1.5) < 2010<f(1.5)<20
20<f(1.5)20 < f(1.5)20<f(1.5)
Type a concept, like “slope” or “photosynthesis”.