Mathematics, 09.09.2020 05:01 armon15
The world record time for a certain swimming event was 63.2 seconds in 1950. Each year thereafter, the world record time decreased by 0.4 second
(a) Use a formula to express the world record time as a function of the time since 1950. (Lett be the time in years since 1950 and R the record time in seconds)
R
(6) Express using functional notation the world record time in the year 1957
RO
Calculate the world record time in the year 1957.
sec
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