Question

In a chemistry experiment, the temperature of a gas, in degrees Celsius, followed the pattern below (referring to the image). which of these expressions describes the pattern?A. 300 - 15tB. 300 + 15tC. 300t + 15D. 300t - 15

Answer 1

Notice that:

$\begin{gathered} 300=300-15*0, \\ 285=300-15*1, \\ 270=300-15*2, \\ 255=300-15*3. \end{gathered}$

Therefore the expression that describes the given pattern is:

$300-15t.$

Answer: First option.