To find the answer just substitute the values of P and Q into the equation and evaluate following order of operations
we can convert any decimal to a fraction, by simply <u>using as many zeros at the bottom as there are decimals, and losing the dot atop</u>, now let's do so, notice we have 3 decimals, so we'll use 3 zeros.

4:10 is the time that the class ends, I think that's what you meant?
Answer: C
^ because the plot starts on 2, unlike all other choices & it passes 6.