What is the volume of a hemisphere with a radius of 7.6 m, rounded to the nearest tenth of a cubic meter?

If f(x)=2x^6+x^2+2 then what is the remainder when f(x)is divided by x+2

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?