Which algebraic expression represents "twice the sum of y and 9" a. 2+9y b.2(9y) c.2(y+9) d. 2+(y+9)

Read the following two statements. then use the law of syllogism to draw a conclusion. if the tv is too loud, then it will give me a headache. if i have a headache, then i will have to rest.

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

With alll of except for the 2 that i did already