Answer:
Step-by-step explanation:
Expression that defines the number of words per minute that an average person can type is,
[tex]W(t)=47-20e^{-0.6t}[/tex]
a). For t = 0,
[tex]W(0)=47-20e^{0}[/tex]
[tex]W(0)=47-20[/tex]
[tex]=27[/tex]
b). For w = 1,
[tex]W(1)=47-20e^{-0.6(1)}[/tex]
[tex]=47-20e^{-0.6}[/tex]
[tex]=40-10.98[/tex]
[tex]=36.02[/tex]
≈ [tex]36[/tex]
c). For w = 6,
[tex]W(6)=47-20e^{-0.6(6)}[/tex]
[tex]=47-20(0.0273)[/tex]
[tex]=47-0.55[/tex]
[tex]=46.45[/tex]
≈ [tex]46.5[/tex]
d). For w = 12,
[tex]W(12)=47-20e^{-0.6(12)}[/tex]
[tex]=47-0.015[/tex]
= [tex]46.985[/tex]
≈ [tex]47[/tex]
