Mark is online buying songs to download to his smart phone. He has a $20 gift card. He sees that there is a one time fee of $10 to sign up. Then each song cost $1.99. Write the any quality that models the situation above.

(no random links please)

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Which expression is equivalent to (4x^3*y^5)(3x^5*y)^2 \a) 24x^13*y^7b) 36x^13*y^7c) 36x^28*y^7d) 144x^16*y^12

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?