Which expression is equivalent to 8x - 2y + x + x and why? A 4x
B 8x
C 6x -2y
D 10x - 2y

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.

Apudding recipe requires 2/3 of a cup of milk for every 1 3/4 cups of sugar. what is the unit rate of sugar to milk in the pudding recipe?