A company's total sales (in millions of dollars) t months from now are given by S(t) = sqrt t + 2. In your own words, find and interpret S(20) and S'(20). Use these results to estimate the total sales after 24 months and after 25 months.

S(20) = = 4.69 ; value of total sales after 20 months is 4.69 million dollars

S'(20) = = 0.21 ; increase in the total sales after 20 months is 0.21 millions of dollars

S(24) = = 5.10;  5.10  millions of dollars

S(25) = = 5.20 ;  5.20  millions of dollars

Step-by-step explanation:

By rationalization:

=

S(20) = = 4.69 ; value of total sales after 20 months is 4.69 million dollars

S'(20) = = 0.21 ; increase in the total sales after 20 months is 0.21 millions of dollars

S(24) = = 5.10;  5.10  millions of dollars

S(25) = = 5.20 ;  5.20  millions of dollars

21/58.

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