Temperature was 3.7 then it dropped to -1.5. Which expression represents the total temperature change?

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

The reflexive property of congruence lets you say that ∠pqr ≅

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?