In the year 2010 it was estimated the Amazon rain forest was home to

60 000 poison arrow frogs. Due to loss of habitat the number of frogs is

falling at a rate of 15% per annum. Calculated the estimate number of frogs

there will be in 2014.

A bike shop charges x dollars to rent a bike for a half a day. It charges (x + 40) dollars to rent a bike for a full day. The table shows the shop's bike rentals for one day. On that day, the shop made a total of $600 from bike rentals.

Using a directrix of y = - 3 and a focus of (2, 1), what quadratic function is created

How do you can you solve this problem 37 + y = 87; y =

The Boston Marathon is 26.2 miles. Use the times shown in the table to calculate the miles per hour for each division winner. Round to the nearest thousandth.

When someone turns 21, how many days old is that person?

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.