Which expression is equivalent to (47.50 + 32.14) + (16.50 + 3.86) by the Commutative Property?

In the geometric progression –3, 12, −48… what term is 3,072?

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

Prove that 16^4-2^13-4^5 is divisible by 11.