To Find the quotient of 4÷1/5 multiply 4 by WHAT???

HURRY PLSS​

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

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

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?