As soon as possible i hate math and want to get my class done

What is the solution of log2  (3x  -  7)  =  3? 4 5

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

Find measure angle 1 and measure angle 3 in the kite the diagram is not drawn on the scale