For the following exercise,

Use the compound interest formula, $A(t)=P\left(1+\frac{r}{n}\right)^{n t}$.

Solve the compound interest formula for the principal, $P$.

For the following exercise, use the compound interest formula, $A(t)=P\left(1+\frac{r}{n}\right)^{n t}$.
Use properties of rational exponents to solve the compound interest formula for the interest rate, $r$.

You invest an amount of money at an annual simple interest rate of $6.25 \%$. You invest a second amount, $\$ 500$ less than the first, at an annual simple interest rate of $6 \%$. Let $x$ represent the amount invested at $6.25 \%$. Complete the following table.

Use the compound interest formula, $A(t)=P\left(1+\frac{r}{n}\right)^{n t}$.

Use properties of rational exponents to solve the compound interest formula for the interest rate, $r$.

For the following exercises, use the compound interest formula, $A(t)=P\left(1+\frac{r}{n}\right)^{n t}.$ Solve the compound interest formula for the principal, P.

For the following exercise, use the compound interest formula, $A(t)=P\left(1+\frac{r}{n}\right)^{n t}$.
After a certain number of years, the value of an investment account is represented by the equation $10,250\left(1+\frac{0.04}{12}\right)^{120}$. What is the value of the account?

Use the change-of-base formula to write the given logarithm as a quotient of common logs. $\ln y$

Evaluate or simplify. $\log 10^{-5}$

Find the formula for an exponential function that passes through the two points given.

$$(x, y) = (0, 4)\quad\text{and}\quad (x, y) = (3, 108)$$

Althea will need $30,000 for her nursing school tuition in 18 months. She has a bank account that pays 2.45% interest compounded monthly. How much does she have to put in each month to have enough money for the tuition?

Create a check register for the transactions listed. Your balance on 12/15 is $2,546.50.

Nancy has $4,111 in an account that pays 1.07% interest compounded monthly. What is her ending balance after two years?

How much simple interest is earned on $6,000 at an interest rate of 2.25% in$4 $$\frac{1}{2}$ years?

Colleen is 15 years from retiring. She opens an account at the Savings Bank. She plans to deposit $10,000 each year into the account, which pays 1.7% interest, compounded annually. a. How much will be in the account in 15 years? b. How much interest would be earned?