Please can someone help me out on this it’s due Tmr for school

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.

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?