Question

initial value: 10, weight (oz) of empty jar
rate of change: 5, weight (oz) per cup
of granola
total weight = weight of granola + weight of jar
↓
10
let $x$ be the number of cups of granola.
which expression represents the weight of the granola?
5
$5x$
$5+x$
$5-x$
total weight (oz)
amount of granola (cups)

Explanation:

Step1: Identify granola weight per cup

The rate of change (weight per cup of granola) is given as 5 oz per cup. For $x$ cups, the total weight of granola is the weight per cup multiplied by the number of cups.

Step2: Form the expression

Weight of granola = $5 \times x = 5x$

Answer:

$5x$