a dish has 21,245,673 bacteria in it. The population of bacteria will decline by 80% every day. How many bacteria will be present in 4 days?

Two sides of a rectangle fence are 5 5/8feet long. The other two sides are 6 1/4 feet long. What is the perimeter

The triangle shown has an area of 46 square centimeters. Find the measure of the base (segment AB).

Dominic invested $9,400 in an account paying an interest rate of 4/tfrac{7}{8}4 8 7 % compounded continuously. Alexandra invested $9,400 in an account paying an interest rate of 4/tfrac{3}{8}4 8 3 % compounded quarterly.

Geoffrey used 7 out of his 20 tokens on one game at arcade what is the fraction written in a decimal A. 0.35 B. 0.35 C. 0.4 D. 0.45

Rewrite 2x2x2x2 as a exponent

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.