Urgently need ! i will mark the best answer as brainliest!

the answer is 20 years

Step-by-step explanation:

i used a website

i=p times r times t

P is the principal amount, $500.00.

r is the interest rate, 2.5% per year, or in decimal form, 2.5/100=0.025.

t is the time involved, 20year(s) time periods.

So, t is 20year time periods.

To find the simple interest, we multiply 500 × 0.025 × 20 to get that:

The interest is: $250.00

i believe that the answer is

b. y-1=-2(x-4)

hope this !