Answer:
Ok, we have:
d(t) = 3*t^2 + 5*t - 2.
The first interval is:
(2, 3)
and remember that, for an interval (a,b), the difference quotient is:
D = (f(b) - f(a))/(b -a)
Then in this first interval we have:
So the average rate of change in (2,3) is 20.
now, in (2, 2.5) we have:
So here the rate of change is 9.25
And in the interval (2, 2.1) we have:
So in this interval the rate of change is 1.73
X+y = -2 is the same as y = -x-2 when you subtract x from both sides
x+y = -2 is the same as 2x+2y = -4 when you multiply both sides by 2
So A, B, and C are the same equation just in a different form.
Answer: Choice D) any of the above
Add 2/3 to 1/2, and also subtract 2/3 from 1/2. That will give the two numbers.
1/2 + 2/3 = 3/6 + 4/6 = 7/6
1/2 - 2/3 = 3/6 - 4/6 = -1/6
Answer: The numbers are 7/6 and -1/6.