Determining main effects and interactions in a two-way ANOVA

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?

What is the answer to question 11? richard simplified an expression in three steps, as shown taking 04.10 segment one exam part one (flvs)

|4x-3|-5=4 and |2x+3|+8=3, what are the solutions to the problems