The circumference of the moon is about 6,786 miles. What is the diameter of the moon rounded to the nearest mile? (3.14 for PI)

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Can someone answer this question? : )

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?