Which expression is equivalent to16x2+81? 1. (4x−9i)2 2. (4x+9i)(2x+3i)(2x−3i) 3. (4x+9i)(4x−9i) 4. (4x+9i)2

Ineed in figuring out this problem.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.