GPA Distribution 3.5-3.7: 12%
3.0-3.4:
25%
3.8-4.0: 7%
Find the probability that a student chosen at random
has a GPA between 1.0 and 2.9, inclusive.
<1.0: 6%
2.0-2.9
41%
1.0-1.9: 9%

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

How many times larger is 9 × 10^8 than 3 × 10^-5? a. 3 × 10^13 b. 3 × 10^-40 c. 3 × 10^-13 d. 3 × 10^3