During crawfish season, Xavier sells crawfish for $62.50 per sack and charges a $20.00 delivery fee. Write an equation that could be used to determine y, the total cost of x sacks of crawfish delivered to a customer.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Case # 51173878 weighs 814 pounds; case # 51173981 weighs 803 pounds; case # 51174058 weighs 817 pounds; case 51174178 weighs 815 pounds; case # 51174248 weighs 817 pounds; case # 51174495 weighs 781 pounds; case # 51174577 weighs 828 pounds. what are the case #'s of the two cases that weigh the same amount?

Jerrold has to buy 12 copies of a textbook which costs $36.25 per copy. how much must he spend for them?