can someone please help me out with this, but when you answer please explain how you got your answer because I forgot the steps on how to solve it ​

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Which statement describes surface features called maria on the moon

The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams