<span>ill try to help get u started
y = x^2 +1 ;
</span>The y values are 10,5,2,1,2,5,10
For y = x^2-1, they are
<span>8,3,0,-1,0,3,8</span>
Answer:
The volume in such a package is 27648 in³
Step-by-step explanation:
Consider the provided information.
Postal regulations specify that a parcel sent by priority mail may have a combined length and girth of no more than 144 in.
Let the dimension are x by x by y.
Where x is the variable for the square base package and y is the variable for length.
Thus l=x, b=x and h=y
Then the volume of the box is:
(∵V=lbh)
The maximum combined length and girth is 144.
Therefore, 

Substitute the value of y in volume of the box.



Substitute V'(x)=0.



Now apply second derivative test.

(Min)
(Max)
Hence, the maximum volume is at x=24
If x=24 then 
Substituting value of x = 24 and y = 48
gives 27648.
Hence, the volume in such a package is 27648 in³
Pretty sure it’s b, good luck
Answer:
Part 1) 1,560 words
Part 2) 161 miles
Step-by-step explanation:
Part 1) 130 words in 5 mins. How many words in an hour?
Remember that

so
using proportion
Find out how many words in 60 minutes (one hour)

Part 2) 322 miles in 2 hours. How many miles in 60 minutes?
Remember that

so

using proportion
Find out how many miles in 60 minutes

I think the answer is 6 because 900/150= 6 and 6X150 is 900 :)