- Tables, Graphs, Functions and Sequences
- Home
- Making a table and plotting points given a unit rate
- Graphing whole number functions
- Function tables with two-step rules
- Writing a function rule given a table of ordered pairs: One-step rules
- Graphing a line in quadrant 1
- Interpreting a line graph
- Finding outputs of a one-step function that models a real-world situation
- Finding outputs of a two-step function with decimals that models a real-world situation
- Writing and evaluating a function that models a real-world situation: Basic
- Graphing ordered pairs and writing an equation from a table of values in context
- Writing an equation and drawing its graph to model a real-world situation: Basic
- Identifying independent and dependent quantities from tables and graphs
- Finding the next terms of an arithmetic sequence with whole numbers
- Finding the next terms of a geometric sequence with whole numbers
- Finding patterns in shapes

- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who

# Finding outputs of a one-step function that models a real-world situation

In this lesson, we have one-step functions modeling real world problems. In such cases we find outputs of those functions.

After eating at a restaurant, Joe, Tom, Bill and Sunny decided to divide the bill evenly. If the total bill given by the function A(x) = 4x amounted to $136, how much should each pay(x)?

### Solution

**Step 1:**

Total bill amount A(x) = 4x = $136

**Step 2:**

$\frac{4x}{4}$ = $ $\frac{136}{4}$

So x = $34

Shania is baking a cake. The recipe calls for C(y) = y + 3 cups of flour. How many cups does she need if y = 5 cups?

### Solution

**Step 1:**

Cups of flour, C(y) = y + 3 cups; y = 5

**Step 2:**

C(y) = y + 3 = 5 + 3 = 8

So C(5) = 8 cups

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