Acar is moving at an average speed of 23 m/s how long will it take the car to go 300 m

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

Will you chech and finish these for me, because i am stumped with them.