Download presentation

Presentation is loading. Please wait.

Published byTina Hoskins Modified over 2 years ago

1
Determining time and remaining amounts

2
PERT! A = Pe rt (sure is purdy, isn’t it?!) A = After amount P = Principle (Starting amount) R = Interest Rate (divided by 100) T = time (in years)

3
Maggie is saving up money to buy her first car. She has $3,500 to put in the bank for 5 years. How much money will she have if she gets an interest rate of 7.9%?

4
A = ? P = 3500 R = 7.9% = 0.079 T = 5 A = 3500e 0.079*5 = $5,195.34

5
We need to use log! No, not that kind of log!

6
You decide that you want to deposit some money in the bank. You want to put $25 in and save it. The bank meant to give you a rate of 8%, but they made a typo and ended up giving you a rate of 80%. How long will it take you to get to $100

7
Steps 1. Divide both sides to get the base and exponent alone 2. Ln both sides 3. Bring the exponent to the front 4. Isolate t to solve Example 100 = 25e 0.8t 4 = e 0.8t Ln 4 = Lne 0.8t Ln 4 = 0.8tLne Ln 4 = 0.8t Ln 4 ÷ 0.8 = t 1.73 = t *It will take 1.73 years to reach $100

8
Practice!!! Pg. 163 #2: t = 20.996 #3: t = 69.31 Pg. 167 #3: t = 16.22 #4: t = 15.40

9
Definition: the amount of time necessary for half of a substance to disappear Formula: N 0 = After Amount N 1 = Starting Amount T = time T.5 = length of 1 half-life When not given a starting amount, use 100!

10
The D.J. at the prom starts the evening with a playlist of 15,000 songs. Right before the prom, his computer gets a virus causing half of the playlist to not work after 40 minutes. How many songs will he have left if the prom lasts 120 minutes?

11
Steps 1. Determine your variables and fill in 2. Simplify 3. Solve Example N 0 = ? N 1 = 15000 T = 120 T.5 = 40

12
1) 12.5 mg 2) 62.996 mg 3) 8.8978% 4) 86.446%

Similar presentations

OK

Solving Equations with Logs. Exponential and Log Equations.

Solving Equations with Logs. Exponential and Log Equations.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on marketing class 12 Ppt on index of industrial production of india Ppt on computer networking basics Ppt on high voltage engineering jobs Ppt on direct taxation in india Download ppt on verb in hindi Ppt on cross-sectional study define Ppt on types of clouds Ppt on review writing on books Ppt on channels of distribution examples