The temperature change from night to day this past week was a 21 degree change in 7 hours time. How many degrees did it change in one hour?

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

What is the value of x in the following equation? -3x-2=2x+8