Mathematics

If c is partly constant and partly varies to t find the relation between c and t if c equal to 30 when t equal to 2 and c equal to 50 when t equal to 6 find c when t equal to 3

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  1. c = a + b t

    30 = a + 2 b
    50 = a + 6 b
    --------------------- subtract
    -20 = -4 b
    b = 5
    30 = a + 10
    a = 20
    so
    c = 20 + 5 t
    so now you finish

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  2. c = mt + k
    when c = 30, t = 2, c = 50
    but you already told me that c = 30
    the rest is"
    " and c equal to 50 when t equal to 6 find c when t equal to 3"
    which is a lot of gobbledegook.

    So I will wait till you fix the problem

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  3. ahh, looks like Anonymous
    figured out what you were saying , go with his solution

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