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Suppose that `y` is directly proportional to `x`.
Find the constant of proportionality `k` if `y = 52.5` when `x = 15`.
`k` =
(Write your answer as a decimal.)
Using the `k` from above write the variation equation in terms of `x`.
`y` =
Using the `k` from above find `y` given that `x = 40`.
`y` =
If needed, round answer to 3 decimal places.
Enter DNE for Does Not Exist, `oo` for Infinity 3.5
`3.5 x`
140