If a 1 = 3 and a ( n + 1 ) = 2 a n   , which equation represents the explicit formula for the sequence? a. a n = 2 · 3 n b. a n = 2 · 3 n − 1 c. a n = 3 · 2 n d. a n = 3 · 2 n − 1

Abag of popcorn contains 483 calories and servers 3.5 people. how many calories are in each serving.

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?