Write the powerset of the following sets
a) {3,7,9}
b) {a,{ 1,2}}
c) {p, q,r, s}
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Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

Find the distance between (0,5) & (-4,2)