Christa’s fitness app shows that her average speed during a run was 5.777… miles per hour. Her friend ran an average of 5 2/3 miles per hour. What fraction will allow Christa to compare her average speed to her friend's average speed?

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?