Plz help me i will give u 50pts^_^ and brainliest<3

Last saturday, the museum box office sold 281 tickets for a total of $3,954. adults ticket cost $15, and students ticket cost $12. how many of each kind of tickets were sold?

Given the function f(x) = 3x + 1, evaluate f(a + 1). a. 3a + 1 b. a + 2 c. 3a + 4

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28