PLEASE HELPP PRE CAL!!

Given..

Tan x = 3/4; sin (pi/2 - x)

What is sinx??

(I know its 3/5 but can someone show me how?!)

Bob’s bank charges him a $3.15 service fee every time he uses an out-of-network atm. if bob uses an out-of-network atm an average of three times every two weeks, how much will he pay in service fees over the course of a year? a. $327.60 b. $109.20 c. $491.40 d. $245.70 select the best answer from the choices provided a b c d

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.