Mean = total score : frequency
mean x frequency = total score
so
83 = total score : 6
83 × 6 = total score
498 = total score
so the sum of the 6 test scores is 498
Answer:
20%
Step-by-step explanation:
Step 1: C. Step 2: A Step 3: B
Since simple interest doesn't involve compounding, the same amount gets added on every year. So, the equation for the simple interest received is

, where

is the total interest,

is the original deposit (or "principal"),

is the interest rate, and

is the time passed in years.
Plugging in our values, we can solve for the interest rate:



The common ratio would be -2 since you multiply each number by -2 to get the next number in the sequence