Question

S is partly constant and partly varies with T. When S =530,T=1600,when S=730,T=3600.find
(A)the formula connecting S and T
(B)S when T=1300

Answer 1

s = a + b t
530 = a + 1600 b
730 = a + 3600 b
---------------------------- subtract
-200 = -2000 b
b = 0.10
530 =a + 160
a = 370
so
s = 370 + 0.10 t
etc

Answer 2

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