Solving Exponential Equations and Compound Interest

Solve for x.

e^x-10 + 9 = 51

• 13.7

• -13.7

• No Solution

• -6.26

Ashleigh put some money into an account paying 4.5% compounded continuously for 10 years. She now has $3567.91 in the account. How much money did she start the account with?

• $2275

• $2725

• $2572

• $3275

Dash puts $4125 into an account using compounded continuously. If he keeps the money in the account for 5 years and now has a total of $4193.89. What is the interest rate?

• 0.33%

• 0.025%

• 0.053%

• 0.052%

Chelsea put $7500 into an account paying 5% compounded continuously. She now has $10,643.01. How long has the money been in the account?

• 7 years

• 6 years

• 5 years

• 4 years

What is the formula for continuously compounded interest?

• A = Pe^rt

• A = Pe^t

If $1,000 is invested at 16% interest, compounded continuously, for five years, what is the ending balance?

• $1,225,54

• $2,225.54

• $22,255.40

• $225.54

if you are solving for t in the continuous compounding equation, what is the base of your log?

• 10

• 2

• e

• it has no base

what TYPE of functions are the compound interest functions?

• linear

• quadratic

• log

• exponential