When the swimmers first arrived at the pool the temperature of the water was only 72.5 degrees by the time the first race started the temperature had gone up 5.6 degrees what was the temperature of the water when the first race started?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Kai walked one and two-thirds of a mile on saturday and four and one-sixth of a mile on sunday. how many miles did kai walk?

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?