Answer:
ok..it might be the 2nd one
Step-by-step explanation:
Raul took 2 hours and 30 mins to bike 31 1/4 miles. Well 31 1/4 is equivalent to 31.25 and 2hr 30mins is equivalent to 2.5. Now we need to divide the distance by the time to get the rate in mph. 31.25/2.5 = 12.5 So Raul rode at 12.5 miles per hour.
Answer:
Hence, option C is correct.
Step-by-step explanation:
Given the expression
simplifying the expression
Apply radical rule: 
Apply radical rule:
Apply radical rule:
Therefore,
Hence, option C is correct.
Answer:
the y-intercept is where u start on a graph like where it crosses through the middle line and the slope it the rise and run so rise is how much it goes up and run is how much u go over.
hope this helps.
Answer:
Hope that this is helpful.
Step-by-step explanation:
-3(2x-1)^2+12x^2
= -3[(2x-1)(2x-1)]+12x^2
=-3[2x(2x-1)-1(2x-1)]+12x^2
=-3(4x^2-2x-2x+1)+12x^2
=-3(4x^2-4x+1)+12x^2
=-12x^2+12x-3+12x^2
=(-12x^2+12x^2) +12x-3
=0+12x-3
=12x-3
