Select all the expressions that are equivalent to -21
4^
3
4^
-7
a( 4^
-18
b)4^
-24
c)4^
-7
d)1/4^

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

Libby built a fence that was 56 \text { feet}56 feet long over 44 days. she built the same length of fence each day. how many inches of fence did libby build each day?

Here is another math questions. i will keep asking different questions. 4^2x=6