options: Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Work with addition and subtraction equations.

Reason about and solve one-variable equations and inequalities.

Interpret the structure of expressions.

Generate and analyze patterns.

Write expressions in equivalent forms to solve problems.

Understand the relationship between zeros and factors of polynomials.

Write and interpret numerical expressions.

Represent and solve equations and inequalities graphically.

Understand and apply properties of operations and the relationship between addition and subtraction.

Add and subtract within 20.

Analyze and solve linear equations and pairs of simultaneous linear equations.

Gain familiarity with factors and multiples.

Understand properties of multiplication and the relationship between multiplication and division.

Use properties of operations to generate equivalent expressions.

Represent and analyze quantitative relationships between dependent and independent variables.

Represent and solve problems involving multiplication and division.

Solve systems of equations.

Understand the connections between proportional relationships, lines, and linear equations.

Create equations that describe numbers or relationships

Use polynomial identities to solve problems.

Understand solving equations as a process of reasoning and explain the reasoning.

Work with equal groups of objects to gain foundations for multiplication.

Rewrite rational expressions.

Work with radicals and integer exponents.

Solve equations and inequalities in one variable.

Analyze patterns and relationships.

Multiply and divide within 100.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Solve real-life and mathematical problems using numerical and algebraic expressions and equations.

Use the four operations with whole numbers to solve problems.

Perform arithmetic operations on polynomials.

Represent and solve problems involving addition and subtraction.
problem_activity: Task
Kell  works at an after-school program at an elementary school. The table below shows how much money he earned every day last week.
|              |  Monday   | Wednesday | Friday  |
|--------------|-----------|-----------|---------|
| Time worked  | 1.5 hours | 2.5 hours | 4 hours |
| Money earned |  \$12.60  |  \$21.00  | \$33.60 |
Mariko has a job mowing lawns that pays \$7 per hour.
Who would make more money for working 10 hours? Explain or show work.
Draw a graph that represents $y$, the amount of money Kell would make for working $x$ hours, assuming he made the same hourly rate he was making last week.
Using the same coordinate axes, draw a graph that represents $y$, the amount of money Mariko would make for working $x$ hours.
How can you see who makes more per hour just by looking at the graphs? Explain.


correct_option_index: 18