Exponential Functions Review

• The account balance will decrease 0.04% each year

• The account balance will increase 0.04% each year

• The account balance will decrease 4% each year

• The account balance will increase 4% each year

• The population is increasing.

• The population is decreasing.

• 0.5%

• 0.995%

• 5%

• 99.5%

• 995%

• The account balance will decrease 0.07% each year

• The account balance will increase 0.07% each year

• The account balance will decrease 7% each year

• The account balance will increase 7% each year

• The decay factor for a 34% monthly interest rate

• The growth factor for a 3.4% monthly interest rate

• The initial value of the deposit

• The monthly deposit

A business manager has a starting annual salary of $42,000. Each year, the business manager will get a salary increase of 5.5%. Which function represents the business manager's salary, S, after t years?

Which functions represent exponential decay? Select ALL that apply.

Which functions represent exponential growth? Select all that apply.

Which equation describes the story below?
You have $5 and triple your money every day. 

• y=5(3)^x
• y=5^x
• y=5(3x)
• y=15^x

Write an exponential function to model the situation. Solve.
2) The cost of tuition at a college is $12,000 and is increasing at a rate of 6% per year. What will the cost be after 4 years?

• C(t) = 12000(1.06)^t ; $3149.72
• C(t) = 12000(.06)^t ; $3149.72
• C(t) = 12000(.06)^t ; $1472.95
• C(t) = 12000(1.06)^t ; $15149.72