Question

- Higher Order Thinking The quadratic function

Answer 1

Graphs are used to represent real life models

To calculate the diameter, we substitute the value of x in the function,

From the complete question (see attachment for graph), we have the following observations

• y represents the diameter of the cereal bowl
• x represents is depth

The above statement means that:

y is a function of x

So, when the depth is known (i.e. the value of x is known)

We simply substitute this in the function, to calculate the diameter

Take for instance:

$\mathbf{x = 8}$

The diameter of the bowl would be:

$\mathbf{y = 0.32x^2 - 1.6x + 2}$

Substitute 8 for x

$\mathbf{y = 0.32\times 8^2 - 1.6 \times 8 + 2}$

$\mathbf{y = 20.48 - 12.8 + 2}$

$\mathbf{y = 9.68}$

The above equation means that:

The diameter of the bowl is 9.68, when the depth of the bowl is 8

Read more about quadratic functions at:

brainly.com/question/5975436