Question

Peter is conducting a chemical experiment in a controlled environment. The initial temperature of the chemical solution was 20°C. The temperature of the solution was 1.5 times the initial temperature after 3 minutes. The temperature of the solution continued to increase at this rate. This situation is graphed below.

Answer 1

Given:

There are given the graph of the exponential function:

Step-by-step explanation:

The horizontal grid lines are 10 degrees C apart,

So,

45 degrees C corresponds to a vertical position halfway between the 4th grid line and the one marked 50.

Then,

The graph intersects that position at the 2nd vertical grid line.

The vertical grid lines are 3 minutes apart.

So,

If peter conducted the experiment from its start until the temperature reached 45 degrees C.

Therefore, the range will be:

`0\leq x\leq6`

Final answer:

Hence, the correct option is C.