To complete the square for x2 + 8x = -7 you will need to add what number to both sides?
A. -4
B. 12
C. 64
D. 16

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Yo need asap pls ! markin da brainiest too !