1/3 (21 - 3a) = 6 - 8 a) all real numbers b)no solution c) -1 d) 0

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?