The scatter plot represents the purchase prices and selling prices of x ray machines made by five different manufacturers. which of the following points show errors of prediction or residuals
(14,25) and (15,25)
(15,25) and (18,26)
(14,25) and (16,25)
(12,24) and (18,26)

Neal buys a board game. he pays for the board game and pays $1.54 in sales tax. the sales tax rate is 5.5%. what is the original price of the board game, before tax

The area of a square floor on a scale drawing is 64 square centimeters, and the scale drawing is 1 centimeter: 3 ft. what is the area of the actual floor? what is the ratio of the area in the drawing to the actual area? the area of the actual floor is square feet. the ratio of the area in the drawing to the actual area is 1 square centimeter: square feet.

How many four digit even numbers can be formed from digits 1,2,3,4,5 if repetition is allowed. how can solve this using permutation formula