According to student monitor, a new jersey research firm, the average cumulated college student loan debt for a graduating senior is $25,760. assume that the standard deviation of such student loan debt is $5,684. thirty percent of these graduating seniors owe more than what amount?

We are given with
average cumulated loan = u= $25,760
standard deviation = d = $5,684

We are asked to determine the loan of 30% of the graduating seniors
A z-score for 30% is -0.50
Solving for the amount of loan
-0.5 = (x - 25760) / 5684
x = $22918

ms. sempe is right.

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first we'll find area of trapezium.

area of trapezium = 1/2×height×(sum of parellel sides of the trapezium)

area of trapezium =1/2×4×(13+24)

area of trapezium =1/2×4×37

area pf trapezium = 74in²

now area of rectangle.

area of rectangle = length ×width

area of rectangle= 24in×7in

area of rectangle =168 in²

area of the figure= 74in²+168in²

area of figure=242in²