Writing a Function Rule

Front

What is a function rule in mathematics?

Back

A function rule is a mathematical expression that describes the relationship between two variables, typically in the form of an equation, where one variable depends on the other.

Front

How do you write a function rule for a total cost that includes a fixed cost and a variable cost?

Back

The function rule can be written as C = F + Vn, where C is the total cost, F is the fixed cost, V is the variable cost per unit, and n is the number of units.

Front

What does the variable 'c' represent in the context of a book with chapters?

Back

In the context of the book, 'c' represents the number of chapters in the book.

Front

How do you calculate the total number of pages in a book with a fixed introduction, variable chapters, and a fixed ending?

Back

The total number of pages can be calculated using the formula p = fixed pages + (pages per chapter * number of chapters).

Front

What is the significance of the negative sign in the depth function d = -10 - 50t?

Back

The negative sign indicates that the divers are moving deeper into the water, starting from an elevation of -10 ft.

Front

How do you find the depth of divers after a certain time using the function d = -10 - 50t?

Back

To find the depth after a certain time, substitute the value of time (t) into the function and solve for d.

Front

What is the formula to calculate a percentage tip on a meal?

Back

The formula to calculate a percentage tip is Tip = (Tip Percentage) * (Cost of Meal).

Front

If a meal costs $45 and you want to leave a 15% tip, how much is the tip?

Back

The tip would be $6.75, calculated as 0.15 * 45.

Front

What is the total amount of money left after paying for a meal and leaving a tip?

Back

Total money left = Initial amount - (Cost of meal + Tip).

Front

How do you calculate the total rental cost for a car based on daily rental rates?

Back

Total rental cost = Daily rental rate * Number of days rented.