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

Solve systems of equations.

Use properties of operations to generate equivalent expressions.

Reason about and solve one-variable equations and inequalities.

Generate and analyze patterns.

Use the four operations with whole numbers to solve problems.

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

Write and interpret numerical expressions.

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

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

Analyze patterns and relationships.

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

Perform arithmetic operations on polynomials.

Represent and analyze quantitative relationships between dependent and independent variables.

Multiply and divide within 100.

Rewrite rational expressions.

Represent and solve problems involving multiplication and division.

Add and subtract within 20.

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

Use polynomial identities to solve problems.

Create equations that describe numbers or relationships

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

Work with radicals and integer exponents.

Write expressions in equivalent forms to solve problems.

Represent and solve equations and inequalities graphically.

Solve equations and inequalities in one variable.

Interpret the structure of expressions.

Understand the relationship between zeros and factors of polynomials.

Represent and solve problems involving addition and subtraction.

Work with addition and subtraction equations.

Apply and extend previous understandings of arithmetic to algebraic expressions.

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

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

Gain familiarity with factors and multiples.
problem_activity: Task
In a carefully controlled biology lab, a population of 100 bacteria reproduces via binary fission. That is, every hour, on the hour, each bacteria splits into two bacteria. Assuming no bacteria deaths, find an expression for the number $P(t)$ of bacteria in the population after $t$ hours.
In the next lab over, a population of protists reproduces hourly according to multiple fission. The function which gives the population of protists after $t$ hours is $$P(t)=50\cdot 3^t.$$ Interpret the significance of the numbers 50 and 3 in the context of the biological experiment.


correct_option_index: 26