PLEASE HELPP PL Kerri Ann's baby sister was 15 pounds at her last check up. This is a 25% increase
from birth. How much did her baby sister weigh at birth?

Kinu wants to buy topsoil for a section of her garden that has the dimensions shown in the figure. each bag covers 2 square yards. how many bags of topsoil should kinu buy? explain how you found the answer.

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?