Find the percent of change if the original cost was $5 and the new cost is $1.

A newspaper writer will write an article about the mean age of voters. She will estimate by selecting a sample of voters and calculating their mean age. Which method should the writer use to select the sample? A.

How many kilograms are equal to 5,000 grams?

How do you solve questions that contain multiplication or division?

Nicole invested her savings in two investment funds. The amount she invested in Fund A was $3000 less than the amount she invested in Fund B. Fund A returned a 6% profit and Fund B returned a 8% profit.

a house has decreased in value by 33% since it was purchased. If the current value is $268,000, what was the value when it was purchased?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.