Question

Determine whether each scenario can be modeled by a linear equation, linear inequality, or exponential equation. Identify the 2 variables.

a) A loaf of bread costs $1.45 and increases by $0.25 each week.

Answer 1

The increase in the cost of a loaf of bread per week can be modeled by a linear equation with time as the independent variable and cost as the dependent variable.

Step-by-step explanation:

The scenario provided can be modeled by a linear equation because the cost of the bread increases by a constant amount each week. In this case, the two variables are:

• Time (in weeks), which is the independent variable, denoted as 'x'.
• Cost of the loaf of bread, which is the dependent variable, denoted as 'y'.

The linear equation that represents the cost of the bread as it increases by $0.25 each week starting from $1.45 can be expressed as: y = 0.25x + 1.45.