51pts! which expression represents a difference of squares?

A. 81-49y^2

B. 25k-64

C. t^2+100

D. 4x^2-16x

4 + (-4) = 0 what property is this?

Beth has a wooden box. The inside of the box is 5 in. wide. 8 1/2 in. long, and 4 1/2 in. deep. The box has no top. Beth wants to line the box with felt to protect the items she puts in. How many in. square of felt will she need?

Who can give me all the answers to the unit test

What value is added to both sides of the equation x^2 - 4x = - 2 in order to solve by completing the square? 4 2 -2 -4

Lisa has five times as many books as she has CDs. She must be either over 45 or a librarian. Lisa also has 35 books. Okay, scratch that. She just hates music. How many CDs does she have?

Find the sum: -21 + (-13) + (-9). A. - 43 B. - 25 C. 1 D. 4

A blueberry muffin recipe calls for 1 3/4 cups of sugar. How many cups of sugar would be needed to make the muffin recipe 3 times?

All insurance is based on a principle called A. division of risk. B. investment premiums. C. cash value coverage. D. premium earnings.

What is the complete factorization of the polynomial below? x3 + 9x2 + 26x + 24

Which two ratios represent quantities that are proportional? A.) 22/33 and 14/21 B.) 48/60 and 35/42 C.) 25/28 and 5/7 D.) 16/13 and 13/16