Answer:
11.05
Step-by-step explanation:
2x-5=18
2x+5=23
2x/2=2/23
x=11.05
Answer: 5 7\8
Step-by-step explanation:
Answer:
He needed to do what he had to.
Step-by-step explanation:
Answer:
f(x) = - 8
Explanation:
The given function is
f(x) =2x^2 -4x -6
The first step is to find the derivative of the function. Recall, if
y = ax^b
y' = abx^(b - 1)
Thus,
f'(x) = 4x - 4
We would equate f'(x) to zero and solve for x. We have
4x - 4 = 0
4x = 4
x = 4/4
x = 1
We would substitute x = 1 into the original function and solve for f(x) or y. It becomes
f(1) =2(1)^2 -4(1) - 6 = 2 - 4 - 6
f(1) = - 8
Thus, the minimum value is f(x) = - 8
You find the unit rate of the books by dividing the number of books by the that price, and for this example the answer should be $.75 per book