A motel wants to buy 9 lamps for some of its rooms. Each lamp is $76.95 if from 1 to 5 are bought, an $68.95 if more then 5 are bought at one time. What is the percent saved by buying all nine lamps now, to the nearest tenth percent?

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.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

What is the volume of this container?