Grade 11 Math Exponents & Financial Math Review!

Exponential Functions: Which of the following functions represents this scenario: My frog collection starts at 3 frogs and doubles every 4 months. (The "t" in these functions is in years)

Emma has three pigs, but wants more. She buys two more pigs which are free to reproduce, and their population doubles every 6 months. The original three pigs never reproduce. ("t" is in years)

Which of the following formulas matches this table?

Financial Math: If I earn 5% simple interest on a $3,000 investment for 4 years, how much interest have I earned?

• $646.52

• $150

• $600

• $3646.52

Ayman invests $2,000 in a savings account with 4% interest compounded annually. How much interest will he have earned after 3 years?

• $249.73

• $251.02

• $240

• $339.72

Ali decides to invest $500 in a savings account that pays 3% interest. Assuming this interest is compounded monthly, how much money does Ali have after 3 years?

• $547.03

• $515.21

• $546.36

• $503.76