The interest rate r required to increase your investment p to the amount a in t years is found by . Find the interest rate r for p = 8100, a = 10,000, and t = 2. Round to the nearest hundredth.

The interest rate was of 0.1173 = 11.73%.

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 problem, we have that:

So

So

The interest rate was of 0.1173 = 11.73%.

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

answer: 414,377,008

step-by-step explanation:

just multiply it