Write the series 2+4+6+8 in sigma notation

A recent study showed that women who lived near a freeway had an unusually high rate of rheumatoid arthritis. Sarah said, "They should move away from freeways." Select the correct fallacy in Sarah's reasoning?

Alice wants to use her savings at the end of the 2 months to buy concert tickets. if the tickets cost $17.50 each, how many can she buy?

17 is 40 percent of what number?

If the reserve rate is 3% and a bank receives a deposit of 16,000 how much of the 16,000 is the bank free to loan out?

Given the transformation rule f (x + 2), how will the graph of the function change?

Randall bought a bond with a face value of $6000 and a coupon rate of 7.25%. the bond will mature in 5 years. how much interest will he receive semiannually?

Ryan has $0.75 worth of pennies and nickels. He has 3 more nickels than pennies. Determine the number of pennies and the number of nickels that Ryan has.

A stack of 6 books weighs 7.8 pounds. If each book weighs the same amount, how much doesn't each book weigh?

5/7 times 9/10 equals?

Question: The radius of a circle is 16 cm. Find an equation that expresses the ratio of the circumference of the circle to the circle's diameter as π. Show all steps.