History back ground about corruption and services delivery​

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Use the graph of the sine function y=2sinθ shown below

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.