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

How do i do this activity, is appreciated

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

The stem-and-leaf plot shows the heights in centimeters of teddy bear sunflowers grown in two different types of soil. soil a soil b 5 9 5 2 1 1 6 3 9 5 1 0 7 0 2 3 6 7 8 2 1 8 3 0 9 key: 9|6 means 69 key: 5|8 means 58 calculate the mean of each data set. calculate the mean absolute deviation (mad) of each data set. which set is more variable? how do you know?