At 2 p.m., Sanjay measures the temperature to be $3^{\circ} \mathrm{C}$. He measures the temperature every hour after this until 10 p.m. He plots the temperatures that he measures on the graph shown. At what time after 2 p.m. does he again measure a temperature of $3^{\circ} \mathrm{C}$ ?
(A) 9 p.m.
(B) 5 p.m.
(C) 8 p.m.
(D) 10 p.m.
(E) 7 p.m.

![](https://cdn.mathpix.com/cropped/2024_04_20_e85ef69091c57cb633f3g-056.jpg?height=466&width=618&top_left_y=1198&top_left_x=1119)
The line representing a temperature of $3^{\circ}$ is the horizontal line passing halfway between $2^{\circ}$ and $4^{\circ}$ on the vertical axis.

There are two data points on this line: one at 2 p.m. and one at 9 p.m.

The required time is 9 p.m.

ANswer: (A)