having trouble coming up with proper formulas and steps to solve. help please!

FRPI. A diverging lens of focal length 10 cm can form an image of an object 20 cm away from (a) What is the location of the image? (b) Is the image real or virtual? (o) Is the image upright or inverted? and find its magnification. (d) Draw a ray diagram and verify the above results. FRP2. Light of wavelength 630 nm is incident upon a single slit with width 0.38 mm. The figure below shows the pattern observed on a screen positioned 2.I m from the slit. a) Determine the distance s. b) What is the distance between the third and the second minimum