The figure below shows a rope that circles the earth. the radius of the earth is 6371 kilometers. assuming the rope makes a perfect circle, what is the length of this rope?

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?