What is the answer for 30 tens - 30 tens and 3 tenths

Julia measured the high temperature in her town for one week. using the chart above, find the mean absolute deviation for the high temperatures. round your answer to the nearest tenth. be sure to show your work for finding: the mean of the set of data the distance of each number from the mean the mean absolute deviation

Given that abcd is a rhombus, what is the value of x?

Pls brainliest will be awarded if answer is correct