Alg. 5-16 Practice

Automobiles start losing value, or depreciating, as soon as they leave the car dealership. Five years ago, a family purchased a new car that cost $16,490.

If the car lost 13% of its value each year, what is the value of the car now?

Select ALL that apply.

• $8,218.96

• $30,381.76

The number of trees in a rainforest decreases each month by 0.5%. The forest currently has 2.5 billion trees. Which is the correct decay factor?

• 0.995

• 0.95

The number of trees in a rainforest decreases each month by 0.5%. The forest currently has 2.5 billion trees. How many trees would be left in 10 years?

• 2.38 billion

• 1.37 billion

• Increasing

• Decreasing

A bank account pays 0.5% monthly interest.

If $500 is put in the account, what will the balance be at the end of one year, assuming no additional deposits or withdrawals are made? 

Which of the following is the equation for graph A?

Which of the following is the equation for graph B?

Which of the following is the equation for graph C?

A major retailer has a staff of 6,400 employees for the holidays. After the holidays, they will decrease their staff by 30%. How many employees will they have after the holidays?