Calvin earns $108.50 for working 7 hours. How much will he earn for working 24 hours

The sum of two numbers is 86, and their difference is 20. find the two numbers

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

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?