IM 5.15 Practice Problems

In 2011, the population of deer in a forest was 650. In 2012, the population increases by 15%.

Write an expression, using only multiplication, that represents the deer population in 2012.

• 650(1.15)

• 650(0.15)

• 650(115)

• 650(15)

In 2011, the population of deer in a forest was 650. In 2012, the population increases by 15%.

In 2013, the population increases again by 15%. Write an expression that represents the deer population in 2013.

• 650(1.15)(1.15)

• 650(0.15)(0.15)

• 650(115)(115)

• 650(15)(15)

In 2011, the population of deer in a forest was 650. In 2012, the population increases by 15%.

In 2013, the population increases again by 15%. Write an expression that represents the deer population in 2013.

If the deer population continues to increase by 15% each year, write an expression that represents the deer population years after 2011.

• 650(0.15)(0.15)t

• 650(15)(15)(15)

• Elena's method will give the correct answer.
• They both are wrong.
• Mai's method will give the correct answer.
• The new price cannot be calculated.

One $1,000 loan charges 5% interest at the end of each year, while a second loan charges 8% interest at the end of each year.

e

f

g

h

d

c

b

a

1102.5

1166.4

1050

1080

1157.625

1259.712

Lin opened a savings account that pays 5.25% interest annually and deposited $5,000. If she makes no deposits and no withdrawals for 3 years, how much money will be in her account?

• 5829.57

• 5000

• 5525

• 5000.0525