Will Give Brainliest!

f(1) = -3

f(n) = 2 * f(n-1) + 1

f(2) = ?

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

The triangles are similar. what is the value of x? show your work.

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?