Algebra 1: Linear vs. Exponential Functions

• growth:

  75% increase

• growth:

  25% increase

• decay:

  75% decrease

• decay:

  25% decrease

A tennis tournament has 128 competitors. Half of the competitors are eliminated each round. Write an equation to represent the number of competitors left after x rounds.

Determine if the following is an example of a linear OR exponential situation:

Suzy adds $10 to her piggy bank each week.

• Linear

• Exponential

• Neither

A three-bedroom house in Burbville was purchased for $190,000. If housing prices are expected to increase by 2% annually in Burbville, write an equaion to represent the price of the house after x years.

• growth:

  80% increase

• growth:

  8% increase

• decay:

  80% decrease

• decay:

  20% decrease

Jonathan makes a weekly allowance of $25. He also makes $9.50 per hour at his job. Write an equation to represent the amount of money earned in a week if he works for x hours in a week.

Determine if the following is an example of a linear OR exponential situation:

A certificate of deposit earns 4% interest each year.

• Linear

• Exponential

• Neither

Kelli's mom takes a 400 mg dose of aspirin. Each hour, the amount of aspirin in a person's system decreases by about 29%. Write an equation to represent the amount of aspirin left in her system x hours after she took the aspirin.

• growth:

  0.2% increase

• growth:

  2% increase

• decay:

  98% decrease

• decay:

  2% decrease

The value of an early American coin increases in value at a rate of 6.5% annually. If the purchase price of the coin this year is $1,950, write an equation to model the value in x years.