In the step by step simplification of expression below which property is not used?
3(1+x)
3(x+1)
3(x)+3(1)
3x +3
a) associative b) commutative c) distributive d) identity

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: