Can someone explain how to find out how many days are in between 12/1/16 and 7/20/20?

Which of the following expressions is equal to 2x^2+8

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.