Question 128747


{{{P(t) = 120 + 4t + 0.05t^2}}} Start with the given function



{{{P(5) = 120 + 4(5) + 0.05(5)^2}}} Plug in {{{t=5}}}



{{{P(5) = 120 + 4(5) + 0.05(25)}}} Square 5 to get 25 



{{{P(5) = 120 + 20 + 1.25}}} Multiply



{{{P(5) = 141.25}}} Add