The graph shows the height in inches, \(h\), of a bamboo plant \(t\) months after it has been planted.

1. Write an equation that describes the relationship between \(h\) and \(t\).
2. How tall will the bamboo plant be after 18 months? Explain or show your reasoning.

Here are recipes for two different banana cakes. Information for the first recipe is shown in the table.

1. If 4 cups of sugar are used, how much flour does each recipe need?
2. What is the constant of proportionality for each situation and what does it mean?

Here is an equation: \(4x-4=4x+\underline{\hspace{.5in}}\). What could you write in the blank so the equation would be true for:

1. No values of \(x\)
2. All values of \(x\)
3. One value of \(x\)

Write each expression with fewer terms.

1. \(12m-4m\)
2. \(12m-5k+m\)
3. \(9m+ k-(3m-2k)\)