Which expression is equivalent to x^8-256

The equation represents the function f, and the graph represents the function g. f(x)=3(5/2)^x determine the relationship between the growth factors of f and g. a. the growth factor of g is twice the growth factor of f. b. the growth factor of f is twice the growth factor of g. c. the growth factor of f is 2.5 times the growth factor of g. d. the growth factor of f is the same as the growth factor of g.

10x − 5y + 14 = 0 whats the answer pls

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work