Recent content by ryanpruette

Yeah, ig the correct way to write it would've been$$ x_2(t) = \begin{cases} 0, & x \lt 6 \\ \frac 5 2 t^2 - 30 t + 90, & x \geq 6 \end{cases} $$ but you still get the same answer, no?

Ohhhh, that must be the issue. I must have been so focused on finding the correct value of t, I didn't think to make sure I was interpreting the question correctly. Iirc 21 s was an answer choice which would've been rounded from ##9 + 3\sqrt {15}##. Thanks for the clarity, I have sadly been...

So this isn't actually a homework question, it's a question that was on the test I just took and I cannot figure out what I'm doing wrong. I've tried solving it three or four different ways, double checking everything, and I keep getting ##15 + 3\sqrt {15}## or ~26.6, which was not one of the...