When 3a2-2a+5 is subtracted from a2+a=1 the result

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?

Select the graph of the solution. click until the correct graph appears. |x| = 3

Can you divide 25 into 4 equal groups? explain why or why not.