The surface area of a sphere and the curved surface area of a cylinder are in the ratio 2:1 . Find the ratio of their volumes, if their radii are equal

Do u just plot the numbers on the graph like (1,

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?