You are Buying snacks. you buy 8 apples and 2 juices. the juice costs $1.75 each. The total cost is 9.50. How much is 1 apple?
1 answer:
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Answer:
Option B.
Step-by-step explanation:
Option A.
f(x) =
Derivative of the given function,
f'(x) =
=
=
Since derivative of the function is negative, the given function is decreasing.
Option B. f(x) =
f'(x) =
=
=
Since derivative is positive, given function is increasing.
Option C. f(x) =
f'(x) =
=
=
Since derivative is negative, given function is decreasing.
Option D. f(x) =
f'(x) =
=
Since derivative is negative, given function is decreasing.
Option (B) is the answer.
Answer:
Step-by-step explanation:
Subtract the right side of the given equation to put it into standard form:
4x² +8x -221 = 0
Then the coefficients used in the quadratic formula are ...
- a = 4
- b = 8
- c = -221
When these are filled into the form ...
the result is as shown above.