Destiny paid $9.60 for a dozen donuts. What is the unit cost for each donut?

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x