Today's high temperature is 72°F. If yesterday's high temperature was 87°F, what was the change in high temperatures? A. -15°F B. 15°F C. 19°F D. -19°F

Can someone show me step by step how to do this?

The formula for finding volume of a cone 1/3pi x r^2h. the volume of a cone is 300 cm^3 and the height of the cone is 10 what is the approximate radius of the cone

Hilary decided to purchase 3 points in order to lower her interest rate on her $140,000 mortgage. how much additional money does she need to bring to closing? a. $4200 b. $4000 c. $6 d. $400