Algebra 1 STAAR Review- Exponential Functions (A.9 A,B,C, D)

• The domain is all real numbers greater than or equal to 4.

• The range is all real numbers less than 0.

• The domain is all real numbers less than or equal to 0.

• The range is all real numbers.

A part of exponential function f is graphed on the grid.

Which inequality best represents the domain of the part shown?

• x > 1

• y > 1

• x > -2

• y > -2

A part of an exponential function is graphed on the grid.

Which inequality best represents the domain of the part shown?

• x ≥ -2

• y ≥ 4.5

• x ≥ 4.5

• y ≥ -2

• The insect population increased by 13 insects each month.

• The insect population decreased by 13 insects each month.

• The insect population increased at a rate of 30% each month.

• The insect population decreased at a rate of 30% each month.

• The initial balance of the account decreases at a rate of 97.5% each year.

• The balance in the account increases at a rate of 2.5% each year.

• The initial balance of the account was $1,025.

• The balance in the account at the end of one year is $850.

Researchers studied the population of a town over time and modeled the data using an exponential function.

-The initial estimated population was 48,000.

-After the first year, the population of the town was 50,400.

If the population of the town continues to grow at this rate each year, which function can be used to model the population x years after the researchers began their study?

This year the number of students who participated in sports was 317. Each year the number of students who participate in sports increases by 4%.

Which function can be used to model the number of students participating in sports after 𝑥 years?

An exponential function is graphed on the grid. Which function is best represented by the graph?

The table shows the value in dollars of a motorcycle at the end of x years. Which exponential function models this situation?

The graph shows the number of game consoles sold in millions since 2009. Based on this information, which function best models the number of game consoles sold in millions x years since 2009?