Answer:
She needs to invest $13,636.36 right now
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
After t years, the total amount of money is:

In this question:
In 15 years, so 
She wants to have $30,000, so 
8% interest, so 
We have to find P.



Replacing:






She needs to invest $13,636.36 right now
For this case we have that by definition, the surface area of a cone is given by:

Where:
A: It's the radio
s: It's the slant
Substituting according to the data we have:

If we round:

Answer:
True
It is 5! Hope I can help! :)
Answer:
x=5
Step-by-step explanation:
x+5 = -3x+25
Add 3x to each side
x+3x+5 = -3x+3x+25
4x +5 = 25
Subtract 5 from each side
4x+5-5 = 25-5
4x = 20
Divide each side by 4
4x/4 = 20/4
x =5
Answer:
the slope is 1
Step-by-step explanation: