Kareem cannot decide which of two washing machines to buy. The selling price of each is $550. The first is marked down by %40. The second is marked down by %30 with an additional %10 off. Find the sale price of each washing machine. Use pencil and paper. Explain why Kareem should buy the first washing machine rather than the second if the machines are the same except for the selling price.

Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

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