Simple Interest, Percent Change, Percent Error

The student council estimated that they would have 250 people attend the homecoming dance. The number of people who attended was 315. What is the percent of error to the nearest hundredth percent? Type the answer in the blank up to the hundredth place value.

Mathematical Equivalence

ON

Tracy put $3500 into an investment account that earns 4.5% annual interest. She left the money for 8 years. How much interest did she get in those 8 years?

• $1260

• $4760

• $2240

• $1860

The ratio that describes how far an estimate is from the actual amount

• Percent Error

• Percent Change

• Percent

A percent of an amount borrowed that is paid to the lender in addition to the amount borrowed

• Percent Increase

• Percent decrease

• Simple Interest

Which object has the smallest percent error?

• Pencil

• Dinner Plate

• Book 1

• Cell Phone

The simple interest formula is I=PRT. What does the R represent?

• Principal

• Interest

• rate

• time

Sam borrowed $4,500 for 2 years and had to pay $630 simple interest at the end of that time. What rate of interest did he pay?

• 6%

• 7%

• 8%

• 9%

The percent of change formula is...

Ann works in a supermarket for $10.00 per hour. She received a raise to $12.00. What is the percent of change in her hourly wage?

• Increase 16.67%

• Decrease 16.67%

• Increase 20%

• Decrease 20%

One week, 72 people got a speeding ticket. The next week, only 36 people got a speeding ticket. What is the percent of change in the speeding tickets?

• Increase 50%

• Decrease 50%

• Increase 1%

• Decrease 1%