How do i solve 8:10+8

If the number of bacteria in a colony doubles every 400 hours and there is currently a population of 500 bacteria, what will the population be 800 hours from now?

A coin is tossed. Find the probability that the result is heads

What is 2.5 as a mixed fraction

What does 2.53*10^-8 equal

Y=x2+12x+20=0 whats the answer

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.