For objects moving at a constant speed, displacement varies directly as time, so the slope of a displacement-time graph gives the velocity.

y = x + 95

y = 42 + 95

y=137 mm hg

89

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.