I am doing my math homework plzzz help me!

Dea writes the expression 0.25 + 0.76 + 0.75 + 0.24. She rewrites the expression using the commutative property. Which expression could Dea have written using the commutative property?
A) (0.25 + 0.76) + (0.75 + 0.24)
B) 0.25 + 0.75 + 0.76 + 0.24
C) (0.25 + 0.76) − (0.75 + 0.24)
D) 0.25(1 + 1)

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.