Answer:
19 minutes in 2 miles is how long it tool her to run it
Step-by-step explanation:
Answer:
1=z
Step-by-step explanation:
Multiply 15 to the parenthesis.
12=15z-15/5
12=15z-3
Add 3 to both sides
15=15z
Simplify
1=z
Answer:
1. B. Blue, because the data points are all close to the line
2. C. about 8
3. B. 17 weeks
4. (Sorry don't know this one)
5. I think its B
6. A. The population is decreasing over time
Step-by-step explanation:
To find concavity we need to find the second derivative.
Use quotient rule to find f'(x)=4/(x+3)^2
Then use chain rule to find f''(x)=-8/(x+3)^3
To find potential inflection points, we need to find all x values where the second derivative is equal to 0 or is undefined.
Set the numerator and denominator equal to 0 and solve.
(x+3)^3=0
x+3=0
x= -3
Now plug a value less than -3 and greater than -3 into the second derivative to find where the concavity is upward (positive number).
Since f''(-4) is positive, that means that f(x) is concave up on the interval (-infinity, -3).