One week you tell 3 of your friends a secret. the next week, each of them tells 3 people the secret and the next week each of those people tell 3 more people. so the first week, 3 new people know the secret, the second week 9 new people know the secret, the third week 27 new people know the secret, etc. how many people find out the secret on the 4th week?

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

Find the missing variable for a parallelogram: a = latex: 28in^2 28 i n 2 h = b = 6.3 in (1in=2.54cm)

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9