First, let's simplify each expression by combining like terms:
A: 9x-3x-4 = 6x-4
B: 12x-4 = 12x-4 (Already Combined terms)
C: 5x+x-4 = 6x-4
When looking at the list of equations, it is clear that only Expression A and C are equivalent. Brianna failed to combine like terms and plug in more points than 0.
<span> The lower and upper bounds of the confidence intervals must be equally distanced from the mean so it will be </span><span>70.9 - 73.1 </span>hope it helps
