The amount of cookies a person needs ,y, varies directly with the number of hours spent baking ,x. for the 12 hours of work the total number of cookies is 93. how many hours of work are needed to eat 155 cookies?

In the film, zeke the zombie slayer versus the zombies from space, zeke slayed 140 zombies. in the sequel, zeke the zombie slayer versus the zombies from space, part 2, he slayed 5% more zombies. how many zombies were slain by zeke in the sequel?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?