AJ practice

What is the Exponential equation?

• $y=mx+b$

• $y=a\left(b\right)^x$

• $y=b\left(a\right)^x$

• $y=abx$

In the exponential function, what does a represent?

• growth factor

• decay factor

• initial value

• exponent

 $y=24\left(0.47\right)^x$  

• growth

• decay

I the exponential equation

 $y=35000\left(1.12\right)^x$ represents the increase of income in a year , how much income would you have in 9 years?

The number of mosquitoes at the beginning of the summer was 4,000. The population of mosquitoes is expected to grow at a rate of 25% a month. How many mosquitoes will there be after 4 months?

• 9766
• 9006
• 9765
• 5433

Daniel’s Print Shop purchased a new printer for $35,000. Each year it depreciates at a rate of 5%. How much will the printer be worth in 8 years?

• $23,219.72
• $136.72
• $51,710.94
• $16,710.94

Determine the number of years it will take for an investment of $30,000 earning 12% p.a. compounding quarterly to grow to $50,000.

Mathematical Equivalence

ON

Find the balance in the account after the given period.

$12,000 principal earing 4.8% compounded annually after 7 years.

• $3,243.19

• $16,661.35

• $15,243.19

• $4,661.35

Find the balance in the account after the given period.

$13,500 deposit earning 3.3% compounded monthly after 1 year

• $13,611.38

• $14,898.84

• $13,537.13

• $13, 952.30

Is the graph linear or exponential?

• Linear Graph

• Exponential Graph