Exponential Review

In the compound interest formula A=P(1+r)^t what does the P stand for?

• The time

• The total amount

• The principal amount (original amount)

• The interest rate

Jacob borrows $500 from Abraham and agrees to have the loan compounded annually for 5 years with an interest rate of 2.5%. How much will the total amount be that Jacob owes?

• $565.70

• $262609.38

• $65.70

• $630.20

Hei-Hei has $1500 in a retirement account earning 5% interest compounded annually. After 5 years how much does Hei-Hei have in the account?

• $1750

• $2010.14

• $2500

• $1914.42

Daniel invests $360 in a bank account that is compounded annually for 8 years with an interest rate of 5.5%. What will be the total amount in the account after the 8 years is over?

• $625.88

• $950.12

• $315.45

• $552.49

 $\frac{18c^2}{-3c^3}$ 

•  $\frac{6}{c}$ 

•  $-6c^{ }$ 

•  $\frac{-6}{c}$ 

•  $\frac{18}{-3c}$ 

 $\left(2x^2y^3\right)^2$ 

•  $2^2x^4y^5$ 

•  $2x^4y^5$ 

•  $4x^2y^5$ 

•  $4x^4y^6$ 

Simplify the expression

• $\frac{-1}{3x^5y^7}$

• $3x^5y^7$

• $16x^{13}y^9$

• $\frac{1}{16x^{13}y^9}$

• $2a^2b^6$

• $\frac{a^2b^6}{2}$

• $\frac{b^6}{2a^2}$
  

• $\frac{2b^6}{a^2}$
  

• $\frac{3}{-x^4y^7}$

• $\frac{-x^4y^7}{3}$

• $x^5y^{10}$

• $6x^6y^{13}$
  

According to exponent rules, when we multiply powers we _______ the exponents.

• add
• subtract
• multiply
• divide