Question

this graph shows how the time required to ring up a customer is related to the number of items being purchased.
ringing up a customer
if it takes 30 seconds to ring up a customer, how many items are being purchased?
items

Explanation:

Step1: Analyze the graph's scale

The y - axis (time) has a scale where each grid might represent 10 seconds. The x - axis (items) has a scale where each grid might represent 10 items.

Step2: Locate the time value on the y - axis

Find the point corresponding to 30 seconds on the y - axis.

Step3: Trace horizontally to the graph line and then vertically to the x - axis

From 30 seconds on the y - axis, trace horizontally to the line of the graph. Then trace vertically down to the x - axis.

Answer:

10