Beth bought 20 tickets to a movie, where adult tickets cost $8.00 and senior citizen tickets cost $4.00. she spent a total of $140. which system of equations will determine the number of adult tickets, a, and the number of senior citizen tickets, s, beth purchased?

a + s = 20

8a + 4s = 140

a + s = 140

8a + 4s = 20

a + s = 20

a + s = 140

a + s = 20

4a + 8s = 140

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.