State whether the following statements are true or false, and explain why. If a statement is false, state the true change.

A high school reports that its students' SAT scores were down by $20 \%$ for one year. The next year, however, SAT scores rose by $30 \%$. The high school principal announces, "Overall, test scores have improved by $10 \%$ over the past two years."

The following pairs of investment plans are identical except for a small difference in interest rates. Compute the balance in the accounts after $10$ and $30$ years. Discuss the difference.

Jose invests $\$ 1500$ in an account that earns $5.6 \%$ compounded annually. Marta invests $\$ 1500$ in a different account that earns $5.7 \%$ compounded annually.

The following pairs of investment plans are identical except for a small difference in interest rates. Compute the balance in the accounts after $10$ and $30$ years. Discuss the difference.

Chang invests $\$ 500$ in an account that earns $3.5 \%$ compounded annually. Kio invests $\$ 500$ in a different account that earns $3.75\%$ compounded annually.

How much must you deposit today into the following accounts in order to have a $\$ 120,000$ college fund in $15$ years? Suppose that no additional deposits are made. An APR of $5.5 \%$, compounded annually

Which tracing in a normal ECG is the repolarization of the atria?

A running track has straight legs of length 100 yards that are 60 yards apart. What is the length of the (inner lane of the) track, including the semicircular legs, and what is the area of the infield of the track?

A picture window has a length of 8 feet and a height of 6 feet, with a semicircular cap on each end . How much metal trim is needed for the perimeter of the entire window, and how much glass is needed for the opening of the window?

A group of people share equally in a $20,000,000 lottery. Before the money is divided, two more winning ticket holders are declared. As a result, each person's share is reduced by$500,000. How many people were in the original group of winners?

Use the appropriate compound interest formula to compute the balance in account after the stated period of time. $\$ 25,000$ is invested for $30$ years with an APR of $3.7 \%$ and quarterly compounding.

Find the annual percentage yield (to the nearest $0.01 \%$ ) in below case. A bank offers an APR of $4.1 \%$ compounded daily.

Use the appropriate compound interest formula to compute the balance in account after the stated period of time. $\$ 25,000$ is invested for $5$ years with an APR of $3 \%$ and daily compounding.

What is the difference between simple interest and compound interest? Why do you end up with more money with compound interest?

Solve the following percentage problem. With $2.4$ million digital subscribers, Game Informer Magazine (ranked first) has $1150 \%$ more digital subscribers than National Geographic (ranked third). How many digital subscribers does National Geographic have?

Find the absolute and relative errors in the following situations.

The vote count in a precinct is $2563$. lt is later discovered that two voters were double counted.