For which of the following pairs of sets is it true that n(D) + n(E) = n(DUE)? a. D = {1, 2, 3, 4), E = {5, 6, 7, 8}
b. D = {}, E = {1}
c. D = {a, b, c, e), E = {c, b, a, d}

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?