Abean plant grows at a constant rate for a month. after 10 days, the plant is 25 centimeters tall. after 20 days, the plant is 45 centimeters tall. which equation models the height of the plant, y after x days?

B.

Step-by-step explanation:

The equation that will model the height of the plant after days will be of the form:

Where is the slope is the y-intercept.

The slope of the line is:

Therefore we have

All we need now is the value of .

We know that after 10 days the plant is 25 centimeters tall, or at ; thus

so we have the equation:

Of the four choices, choice B matches our result, because when we rearrange it and solve for y we get: