Naomi‘s parents want to have $50,000 say to her college education if they invest $20,000 today in earn 7% interest compounded annually about how long will it take them to save the $50,000

13 years

Step-by-step explanation:

Given data

A=50,000

P=20,000

r= 7%

t=??

The compound interest formula is given as

A=P(1+r)^t

Calculate time, solve for t

t = ln(A/P) / r

t= ln(50000/20000)/0.07

t= ln(2.5)/0.07

t= 0.916/0.07

t= 13.0

Hence the time is 13 years

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x