Which description is represented by a discrete graph?
Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax?
The temperature at 9 am, was 83' F and is heating up at an average rate of 6°F per hour. What is the temperature x
hours later?
Juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. What is the total amount of
calories he consumed?
A bottle contained 2,000 mL of liquid and is being poured out at an average rate of 300 mL per second. How much liquid is
left in the bottle after x seconds?

The only discrete variable found lies in the first situation: "Kiley bought a platter..."

Step-by-step explanation:

Discrete and Continuous Variables

The graph of some functions looks very different if one (or both) of the variables are continuous or discrete. If they are both continuous, the graph will look like an uninterrupted line or a curve. The graph will look like scattered points or interrupted segments if at least one of the variables is discrete.

Discrete variables are those who can be counted i.e. are countable in a finite time, and cannot take values in between.  Let's analyze the proposed options:

A platter and bowls can be counted. There are no 0.15 platters. It's a discrete variable

The temperature cannot be counted but measured. It's not discrete

The eggs are countable, but not the calories from 'some cereal' because its amount has not been specified as boxes, spoons, cups or something countable.

The volume of liquid in a bottle is not countable unless you counted the drops or similar variable.

Summarizing, the only discrete variable found lies in the first situation

A : Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax?

Step-by-step explanation:

3x + 4y -25 =0 represents the amount of change sianna should recieve