Answer:
B is the answer i think
Step-by-step explanation:
because its lenear and positive...
Hello!
The slope is in rise over run form
From point to point to goes up 4 and over 10
that is 4/10
This can be simplified to 2/5
The answer is 2/5
Hope this helps!
Well you're given the equation and the time.
substitute:
V(t) = 26,000(0.90^t)
V(11) = 26,000(0.90^(11))
V(11) = 8,159.075498
V(11) ≈ 8,159
Sally ⇒
4 hours = 1 room
1 hour = 1/4 of the room
Steve ⇒
9 hours = 1 room
1 hour = 1/9 of the room
Sally + Steve ⇒
1 hour = 1/4 + 1/9 = 9/36 + 4/36 = 13/36
Number of hours needed ⇒
1 ÷ 13/36 = 1 x 36/13 = 36/13 = 2 10/13 hours
Answer: They need 2 10/13 hours.



At

, you have

The trick to finding out the sign of this is to figure out between which multiples of

the value of

lies.
We know that

whenever

, and that

whenever

, where

.
We have

which is to say that

, an interval that is equivalent modulo

to the interval

.
So what we know is that

corresponds to the measure of an angle that lies in the third quadrant, where both cosine and sine are negative.
This means

, so

is decreasing when

.
Now, the second derivative has the value

Both

and

are negative, so we're essentially computing the sum of a negative number and a positive number. Given that

for

, and

for

, we can use a similar argument to establish in which half of the third quadrant the angle

lies. You'll find that the sine term is much larger, so that the second derivative is positive, which means

is concave up when

.