Question

1. model with math which expression can be used to determine the total weight of a box that by itself weighs 0.2 kilogram and contains p plaques that weigh 1.3 kilograms each?

Explanation:

Step1: Identify the fixed and variable weights

The box itself has a fixed weight of 0.2 kilograms. Each plaque weighs 1.3 kilograms, and there are \( p \) plaques. So the total weight of the plaques is \( 1.3\times p = 1.3p \) kilograms.

Step2: Find the total weight of the box with plaques

To find the total weight, we add the weight of the box to the total weight of the plaques. So the expression is \( 0.2 + 1.3p \).

Answer:

The expression to determine the total weight is \( 0.2 + 1.3p \) (where \( p \) is the number of plaques).