16 pts] list the members of the following sets (a) {a\ is a positive odd number less than 20} (b) xl(ac {a, b, c, d}) a ({a, b} c «r)} (c) rly e zt,3z e z4, x = y(y + z)) a (ar

3

step-by-step explanation:

what is the question

step-by-step explanation:

total income = price of one ticket   *   number of tickets sold

  y                 =     4                                   x

so the equation is y=4x     with x≥0   because number of tickets sold can not be negative

thus the equation is a semi -line with an end point at

(0,0)

passing through :

x=1     y=4(1) = 4   so through (1,4)

the answer is 6

hope this !