Find the simplest interest. principal = $870 interest rate = 3% time = 9 months

$889.58

Step-by-step explanation:

⇒Equation:

A = P(1 + rt)

Turn 3% into decimal and you get 0.03, then 9 months/ 12 months = 0.75 years.

⇒A = 870(1 + (0.03 × 0.75)) = 889.575

⇒A = $889.58

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Given:

A jar of coins has 8 pennies, 5 nickels, 1 dime, and 7 quarters.

To find:

The probability of drawing a quarter, replacing it, and drawing another quarter.

Solution:

A jar of coins has 8 pennies, 5 nickels, 1 dime, and 7 quarters.

Total number of coins = 8+5+1+7 = 21

Probability of getting a quarter is

After drawing a quarter, we replaced it. So, the probability of getting quarter in second draw is the same and first one, .i.e., .

The probability of drawing a quarter, replacing it, and drawing another quarter is

Therefore, the required probability is .