## All Tasks

#### Describe the equation

Fill in the blanks to describe the equation:
4 - 3x = -11

# Linear equations

# Terms with variables

Training

7

#### Solving linear equation 2

Solve the linear equation by equivalent transformation.
24x - 36 = 6

# Linear equations

Training

7

#### Set up a linear equation

Ron is 6 times as old as Lilly. The age difference between the two is 10 years.
How old is Lilly?
Write an equation for Lilly's age using the variable x for her age.

# Terms with variables

Reasoning

7

#### Angles of triangles

In this isosceles triangle, the angles at the base are twice the angle b at the apex.
Choose a suitable equation that you can use to calculate the angle b.

# Triangles

# Angles

Training

7

#### Perimeter kite

In a kite-rectangle, one side is three times as long as the other x. Cross all terms that can be used to determine the perimeter of the figure.

# Terms with variables

Modeling

7

#### Sequence of triangles 1

Determine the numbers of small trinagles for the given step.

# Quadratic functions

Modeling

7