Plz me, 15 points!

what is the area of trapezoid abcd ?

enter your answer as a decimal or whole number in the box. do not round at any steps.

__units²

a (-1,5)
b (3,2)
c (0,-2)
d (-13,-11)

Renita analyzed two dot plots showing the snowfall during the winter months for city a and for city b. she found that the median snowfall is 5 inches less in city a than in city b. the mean snowfall is about 2 inches less in city a than in city b. which explains why there is a difference in the measures of center for the sets of data?

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20