The nth pyramidal number tells how many balls there are in a pyramidal stack that is n layers tall. What kind of pyramid is the stack?
A. A three-sided pyramid
B. A golden pyramid
C. A five-sided pyramid
D. A Fibonacci pyramid
E. A four-sided pyramid

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?