Question

How do you find `w(-7)` given `w(t)=-2t+1`?

Answer 1

`w(t) = -2t + 1`

`w(-7) = -2(-7) + 1`

`= 14 +1`

`= 15`

Explanation:

When you have an equation, such as the above, `w(t)` is saying that `w` is a function of `t`, real numbers.

So, when asked to find `w(-7)`, the question is asking,
At `t = -7`, what is the value of the function `w`? Therefore, if you substitute the value `-7` for each t into the equation, then
`w = 15`.