If Alexis has 12 pencils, how many pencils does Bart have?

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

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

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?