Which expressions are differences of squares?

choose all answers that are correct.

8b^2 - 16c^6

16e^8 - 81g^4

49x^25 - 4y16

121m^18 - 9n^10

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212