Use the Principle of Mathematical Induction to show that the following statement is true for all natural numbers n. 8+16+24+...+8n=4n(n+1)

I need help asap! The PDF is the whole question btw.

Pls , the question is in the picture!

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%