(x + 2)(7x - 1) + 3x^ -2
= 7x^2 + 14x - x - 2 + 3x^2 - 2
= 10x^2 + 13x - 4 Answer
Its choice A
We have to evaluate the piecewise function for f(6). This means when x=6.
Now, we have to look at the conditions.
So when x≥0, we use the second function.
So 6>0, then, we use the second function.
Then:
![\begin{gathered} f(6)=7(6)+3 \\ f(6)=45 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20f%286%29%3D7%286%29%2B3%20%5C%5C%20f%286%29%3D45%20%5Cend%7Bgathered%7D)
Hence, the correct answer is option D.
Answer:
20 <h<30
Step-by-step explanation:
There are 30 plants so the medians is 30/2 = 15, between the 15 and 16 items
15 and 16th items are in the range 20 to 30, so the median is between 20 to 30
20 <h<30
Answer:
28 percent
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
substitute t=-3 in the equation
3(-3) squared +5(-3)+6=18