Select the statements that are true based on the following given information. D = {x | x is a whole number} E = {x | x is a perfect square < 36} F = {x | x is an even number between 20 and 30} The expression D ∩ E is {1, 4, 9, 16}. The expression D ∩ F is {12, 14, 16, 18}. D ∪ (E ∩ F) is {all whole numbers}. (E ∩ F) is the empty set. The expression D ∩ (E U F) is 25

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?