Paul palumbo assumes that he will need to have a new
roof put on his house in four years. he estimates that
the roof will cost him $18,000 at that time. what
amount of money should paul invest today at 8%,
compounded semiannually, to be able to pay for the
roof?
o $13,152.60
$24,634.80
$15,431.40
o $ 9,725.40
o none of the above

$13,52.60

Step-by-step explanation:

The formula to apply is

where

A= amount of money at the end

P=the amount of money to invest, principal

r=rate of interest in decimal

n=number of compoundings per year

t=time in years

Given that;

t=4 years

A=$18000

P=?

r=0.08

n=2

Substitute values in the formula

Divide both sides by 1.36856905041 to remain with P

P=$13152.56

the answer to the expression is 83

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m