Martha is making a model house from a kit. each wall section requires 5 pins to hold it in place. there are 3 wall section. how many pins should be in the kit?

Can someone check my answer? you

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

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