Lena found a -carat diamond ring in the parking lot and turned it in to the police. Afterward, her friends discussed the weight of the diamond in terms of decimal numbers. Lena said it weighed 0.275 carats, but Sheldon thought it was closer to 0.58 carats. Naomi predicted the ring weighed 0.625 carats, but Mark disagreed and said 0.8 carats. Paula went with 0.875 carats. Who had the correct measurement?

Erik buys 2.5 pounds of cashews. if each pound of cashews costs $7.70, how much will he pay for the cashews?

Luis has a cooler filled with cans of soda.for every 5 cans of coke there are 3 cans of sprite.if there are 25 cans of coke, how mant cans of sprite are there?

Runners run around the school's football field. the cross country coach determines that the width of the field is seventy yards shorter than the length. part a write an expression that represents the perimeter of the football field. let x represent the length of the football field. include parentheses in your expression. next, write an equivalent expression that does not include parentheses. what property or properties did you use to simplify? explain. part b the cross country coach later determines that the length of the football field is 120 yards. all students must run five laps. using your answer from part a, determine the actual number of yards that each athlete must run in the tryouts. in order to make the team, students must complete the laps in 6 minutes. how quickly must they run each lap?