Look at the student work shown below.

simplify: 4t(2s – 7).

(4t)(2s) – 7

8st - 7

did the student correctly simplify the expression? if “yes,” explain the steps the student followed. if “no,” explain what the student did wrong and what should have been done.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

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?